Geometry Concepts and Area Formulas

Front

What is the area of a rectangle?

Back

Area = length × width.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 × base × height.

Front

What is the formula for the area of a circle?

Back

Area = π × radius².

Front

What is the definition of circumference?

Back

The distance around a circle.

Front

What is the area of a square?

Back

Area = side × side.

Front

How do you find the area of a composite shape?

Back

Add the areas of the individual shapes.

Front

What is the area of a parallelogram?

Back

Area = base × height.

Front

What is the difference between area and perimeter?

Back

Area measures the space inside a shape; perimeter measures the distance around a shape.

Front

What is the area of a trapezoid?

Back

Area = 1/2 × (base1 + base2) × height.

Front

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

Back

Area = (1/2) × Perimeter × Apothem.