Unit 11: Area of Polygons Review

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height

Front

How do you calculate the area of a rectangle?

Back

Area = length * width

Front

What is the area of a square with a side length of 5 meters?

Back

Area = 5 m * 5 m = 25 m²

Front

Define a regular polygon.

Back

A regular polygon is a polygon with all sides and angles equal.

Front

What is the formula for the area of a regular polygon?

Back

Area = (1/2) * Perimeter * Apothem

Front

How do you find the area of a trapezoid?

Back

Area = (1/2) * (Base1 + Base2) * height

Front

What is the area of a circle with a radius of 7 cm?

Back

Area = π * (7 cm)² ≈ 153.94 cm²

Front

What is the area of a parallelogram?

Back

Area = base * height

Front

How do you calculate the area of an equilateral triangle with a side length of 10 cm?

Back

Area = (√3/4) * (10 cm)² ≈ 43.30 cm²

Front

What is the area of a regular octagon with a side length of 6 m?

Back

Area = 2 * (1 + √2) * (6 m)² ≈ 72.34 m²