Measure each side and angle of the triangle.
Also, measure the angles on the outside of the triangle.
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Students classify triangles by angles and side. Students know the interior and exterior angle theorems for triangles.
What do all the interior angles of a triangle add up to?
How do you quickly identify the measure of an exterior angle of a triangle?
"Classifying Triangles by Angles and Sides"
Create the tree map (below) on loose leaf paper.
Use Constructions to create each type of triangle and measure each side (cm) and angle.