Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees....

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Pre-Algebra Enrichment

Transcript of Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees....

Page 1: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Pre-Algebra Enrichment

Page 2: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Classifying Angles

Acute angle- An angle that measures less than 90 degrees.

Obtuse angle- An angle that measures more than 90 degrees and less that 180 degrees.

Right Angle- An angle that measures 90 degrees.

Page 3: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Question #1If an angle is 180 degrees it is a(n)… Right Angle

Straight Angle

Obtuse Angle

Acute Angle

Page 4: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Sorry!

Your answer was incorrect, please try again!

Page 5: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Correct!

Great job! It is a straight angle. Please continue.

Page 6: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Classifying Triangles (based on sides) Equilateral Triangle- A triangle with three

equal sides Isosceles Triangle- A triangle with at least

two equal sides Scalene Triangle- A triangle with no equal

sides

Page 7: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Classifying Triangles (based on angles) Right Triangle- A triangle containing a right

angle Acute Triangle- A triangle that has three acute

angles Obtuse Triangle- A triangle that has one obtuse

angle and two acute angles Equiangular Triangle- A triangle that has three

equal angles

Page 8: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Question #1AIf a triangle has three equal sides it is called… Equiangular

Equilateral

Isosceles

Scalene

Page 9: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

OOPS!

Sorry, that was incorrect, you better review your triangle information and then try

again!

Page 10: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Congratulations!

You know your stuff! Continue on to further test your triangle knowledge.

Page 11: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Question #2A triangle with an angle greater than 90 degrees is called…

An acute triangle

An isosceles triangle

An obtuse triangle

A right triangle

Page 12: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Sorry!

Your answer was incorrect, please try again!

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Correct!

Great job! It is an obtuse triangle. Please continue.

Page 14: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Question #3What kind of triangle is this:

Right Triangle

Scalene Triangle

Neither Right or Scalene

Both Right and Scalene

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Incorrect!

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Correct!

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General Triangle Properties

Triangles are three-sided polygons.

All triangles have an angle sum of 180 degrees based on the Triangle Sum Theorem.

Page 18: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Question #4A triangle with 4 sides must have an angle sum of: 180

360

240

A triangle cannot have 4 sides.

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OOPS!

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Excellent!

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Question #5What is the angle sum of: 360 degrees

180 degrees

270 degrees

There is no way of knowing what the angle sum is.

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Sorry!

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Great Job!

Page 24: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Angle Pairs:

Complementary Angles- angles that have measures that add to 90 degrees.

Supplementary Angles- angles that have measures that add to 180 degrees.

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Question #6The following angles are considered…

Complementary

Supplementary

Complementary and Supplementary

None of the Above

Page 26: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Incorrect

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Correct!

Page 28: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Question #7A 6 sided figure is called what and has a degree measure of what?

Hexagon, 540

Hexagon, 720

Heptagon, 540

Heptagon, 720

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OOPS!

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Excellent!

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Congruency

Congruent is another word for equal.

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Question #8The second angle of a triangle is two times the measure of the first angle. The third angle is 3 times the measure of the second angle what is the measure of each angle?

1st- 30º, 2nd- 60º, and 3rd- 90º

1st- 20º, 2nd- 40º, and 3rd- 120º

1st- 20º, 2nd- 60º, and 3rd- 100º

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Sorry!

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Great Job

Page 35: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Question #9If two sides of a triangle are said to be congruent that means that they are different lengths. True or False.

True

False

Page 36: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Incorrect

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Correct

Page 38: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Transversals of Parallel Lines

A transversal is a line that intersects any two or more other lines.

When a transversal intersects parallel lines the angles formed have the following properties:

1. All acute angles formed are congruent. 2. All obtuse angles formed are congruent. 3. Any acute angle is supplementary to any

obtuse angle formed.

Page 39: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Question #10What types of angles are 4 and 6?

• Corresponding Angles

Alternate Interior Angles

Alternate Exterior Angles

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OOPS!

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Excellent!

Page 42: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Question #11What types of angles are 2 and 6?

• The angles are alternate interior.

• The angles are corresponding.

• The angles are vertical.

• Not enough information.

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Page 43: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Wrong Answer

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Correct

Page 45: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Question #12What types of angles are 1 and 7?

• Vertical Angles

• Corresponding Angles

• Alternate Exterior Angles

• Alternate Interior Angles

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

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OOPS!

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Great Job!

Page 48: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Slope

The slope of any line is: Vertical Change Horizontal Change

Which is the same as: Rise Run

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Question #13What is the slope of the top line?

• 1

• -1

2

-2

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are needed to see this picture.

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Incorrect

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Correct

Page 52: Pre-Algebra Enrichment. Classifying Angles Acute angle- An angle that measures less than 90 degrees. Obtuse angle- An angle that measures more than 90.

Question #14What is the slope of this line?

0

1

Not enough information.

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OOPS!

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Great Job

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Question # 15What is the slope of this line?

1

0

Undefined

-1

Not Enough Information

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Sorry

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Excellent

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The End!