Why Lesson Planet?
In this classifying triangles activity, 10th graders solve 9 various problems that classify triangles into categories. First, they refer to the figure shown of an isosceles triangle with two line parallel. Then, students name the sides, angles, vertex angle, base angles, opposite side, congruent sides, and the angle opposite to line AC. In addition, they use a protractor and ruler to draw triangles using the given conditions.