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GEOMETRY Unit 5, Triangles
Notes 5-1, Triangle Classification and Special Segments
Name ________________________
Date __________ Period _________
5-1, Triangle Classification and Special Segments
Triangle Classification
We can classify triangles by _____________ and ______________.
By Sides:
____________ – no  sides
___________ – at least two  sides
____________ – three  sides
6
4
8
By Angles:
____________ – all acute angles
___________ – one obtuse angle
__________ – one right angle
100°
Examples: Classify each triangle by angle and sides.
5
11
9
100°
5
6
Notes 5-1
Special Segments of Triangles
Median –
Altitude –
Perpendicular bisector –
Angle bisector –
Triangle Classification and Special Segments