4.1 apply triangle sum properties

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GEOMETRY MILBY HIGH SCHOOL MR. SAUCEDO 4.1 Applying Triangle Sum Properties

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Triangle sum properties, acute, obtuse, right, equiangular, scalene, interior angle, exterior angles, triangle congruence,

Transcript of 4.1 apply triangle sum properties

Page 1: 4.1 apply triangle sum properties

GEOMETRYMILBY HIGH SCHOOL

MR. SAUCEDO

4.1 Applying Triangle Sum Properties

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OBJECTIVE

We will classify triangles and find measures of their angles.

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REVIEW

On your notebook, draw an example of the following. A triangle A Scalene Triangle Isosceles Triangle Equilateral Triangle Acute Triangle Right Triangle Obtuse Triangle Equiangular Triangle

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CLASSIFYING TRIANGLES

We can classify We can also classify

triangles by their … Triangles by their…

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REVIEW:Classifying triangles by their angles

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REVIEWClassifying by Triangle Sides

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CHECKPOINT

CLASSIFY THE FOLLOWING TRIANGLES. (WORD BANK: Scalene, isosceles, equilateral, acute, right, obtuse,

equiangular)

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CHECKPOINT

Label the followingTriangles by theirAngles and sides.

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GUIDED PROBLEM 1

Classify the triangleBy its sides, then Determine if is a Right triangle.

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CHECKPOINT

Classify the triangle by its sides, then determine if is a right triangle.

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TRIANGLE SUM THEOREM

The sum of the measures of the interior angles of a triangle is 180 degrees.

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EXTERIOR ANGLES

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EXTERIOR ANGLE THEOREM

The measure of an exterior angle of a triangle is equal to the sum of the measures of the two non adjacent interior angles.

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CHECKPOINT

Find the measurement of Angle x.

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GUIDED PROBLEM

Find the measure of the exterior angle.

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CHECKPOINT

Find the measurement of the exterior angle CBD.

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CHECKPOINT

Find x.

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INDEPENDENT PRACTICEEnter the responses in your clickers.

1. Problem 52. Problem 12: What kind of triangle is it?3. Problem 12: Is it a right triangle?4. Problem 14: what is x?5. Problem 16: What is x?6. Problem 197. Problem 228. Problem 319. Problem 34: what is x?

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HOMEWORK

SECTION 4.1

Problems: 1, 2, 3, 4, 7, 10, 11, 14, 15, 17, 18, 19, 20, 22.

Pre AP: Add problem 23 & 25.


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4.1 apply triangle sum properties

4.1 apply triangle sum properties

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