Unit 1, Lesson 9# Formula for the Area of a Triangle

Open Up Resources 45 min(s)

Find the area of any triangle (given sufficient information) by any valid reasoning method. Understand and explain that any side of the triangle can be a base, and that its corresponding height is the perpendicular distance from that side to the opposite vertex. Write and use an expression equivalent to for the area of a triangle. Let's write and use a formula to find the area of a triangle.