Perimeter and Area of Rectangles, Squares, Triangles, Polygons

To find area of a triangle, I use the formula:

• A = (bh)/2

• A = bh

• A = LW

• A = LH

Each side on the pentagon above measures 7 cm. What is the perimeter of this regular pentagon?

Perimeter is best described as:

• the total distance around the edge of a figure

• the distance of one side of a figure

• the amount of stuff I can fit inside a figure

• the distance of three sides of a figure

Find the area of this shape.

• 8 in²

• 15 in²

• 16 in²

• 30 in²

Find the area of this shape.

• 25 cm²

• 50 cm²

• 40 cm²

• 150 cm²

_____ is measured in square units and uses the formula length x width. It is used to measure the inside of a flat figure or the surface of a 3D figure.

If the total area is 36 ft.², how long is side G?

• 12 ft.

• 6 ft.

• 432 ft.

• 3 ft.

Which shape has 4 right angles?

• rhombus

• pentagon

• square

• circle

What do you call a shape made of straight sides joined together?

• circle

• 3D

• polygon

Mark all shapes that are flat shapes made up of lines and are enclosed:

• polygons

• quadrilaterals

• trapezoids

• triangles

• rectangles