Unit 1, Lesson 8# Area of Triangles

Open Up Resources 65 min(s)

Reason about the area of any triangle using the base and height of an associated parallelogram. Recognize that a triangle has half the area of a parallelogram. Let's use what we know about parallelograms to find the area of triangles. Students can use what they know about parallelograms to reason about the area of triangles.