Grade 7 - Shape and Space
Standard 7.SS.2 - Practice finding the area of triangles and trapezoids.
Included Skills: Geometry
Develop and apply formulas for determining the area of: triangles, parallelograms, circles. • Illustrate and explain how the area of a rectangle can be used to determine the area of a triangle. • Generalize, using examples, a formula for determining the area of triangles. • Illustrate and explain how the area of a rectangle can be used to determine the area of a parallelogram. • Generalize, using examples, a formula for determining the area of parallelograms. • Illustrate and explain how to estimate the area of a circle without the use of a formula. • Illustrate and explain how the area of a circle can be approximated by the circumference of the circle times its radius. • Generalize a formula for finding the area of a circle. • Solve problems involving the area of triangles, parallelograms, or circles.