Area of Regular Polygon and Composite Figures

Front

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

Back

Area = (1/2) * Perimeter * Apothem

Front

Define a composite figure.

Back

A composite figure is a shape that is made up of two or more simple geometric shapes.

Front

How do you find the area of a composite figure?

Back

To find the area of a composite figure, calculate the area of each simple shape and then sum them up.

Front

What is the area of a triangle?

Back

Area = (1/2) * base * height

Front

What is the area of a rectangle?

Back

Area = length * width

Front

What is the area of a circle?

Back

Area = π * radius²

Front

How do you round a number to the hundredths place?

Back

Look at the third decimal place; if it's 5 or more, round up the second decimal place.

Front

What is the perimeter of a regular polygon?

Back

Perimeter = number of sides * length of one side

Front

What is an apothem in a regular polygon?

Back

An apothem is a line from the center to the midpoint of one of its sides.

Front

How do you calculate the area of a shaded region?

Back

Area of shaded region = Total area - Area of unshaded region.