Post on 13-May-2015
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9.4 Classifying Triangles
Objective: Classify triangles by their angles and sides.
Image: '< < <'www.flickr.com/photos/57301170@N00/1938697463
Mr. WilliamsGESDjwilliams@gesd40.org
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Acute Triangle
Has three acute angles.
Image: 'Quack'www.flickr.com/photos/44124404848@N01/45433962
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http://www.flickr.com/photos/cvangundy4/480668676/Obtuse Triangle
Obtuse Triangle
A triangle with one obtuse angle.
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http://www.flickr.com/photos/cvangundy4/480664752/
Right Triangle
A triangle with one right angle.
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Image: 'Ławki w Olympiastadion w Monachium'www.flickr.com/photos/92011564@N00/267683634
Your Turn:
In your group classify the triangles by their angles.
pg. 436 problems 1 3
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Equilatral Triangle
A triangle that has all three sides the same length.
Image: 'Splash3'www.flickr.com/photos/73491156@N00/477332444
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Isosceles Triangle
A triangle that has two sides the same length.
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Scalene Triangle
A triangle that has three sides of different lengths.
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The angles on a triangle always add up to 180 degrees!
Image: 'ATT….EN……TION…..'www.flickr.com/photos/7166367@N05/1534572737
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Your Turn:With your group, answer questions 1 10 on p. 438.