Perimeter, Area Triangles, Rectangles, Trapezoids

What is this shape?

• ray

• trapezoid

• parallelogram

• rhombus

What is the area of the rectangle?

• 15 cm2

• 8 cm2

• 2 cm2

• 16 cm

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

_____ 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.

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

• polygons

• quadrilaterals

• trapezoids

• triangles

• rectangles

The dimensions of a lawn shaped like a trapezoid are given in meters.

What is the area of the lawn in square meters?

• 108 square meters

• 60 square meters

• 120 square meters

• 72 square meters

Ms. Chen will paint an equilateral triangular tile. A drawing of the tile is shown.

The perimeter of the triangle is 18 inches. If the height is 8 inches, what is the area of the tile?

• 48 square inches

• 144 square inches

• 24 square inches

• 72 square inches

The face of a lamp shade is shaped like a trapezoid. The dimensions of the face are shown in the diagram.

Which equation can be used to find A, the area of the face of the lamp shade in square inches?

• A = 1/2 (6 + 10) y

• A = 1/2 (6 + 10) x

• A = 1/2 (6) + (10) y

• A = 1/2 (6) + (10) x

A rectangular computer screen has an area of A square inches. The width of the computer screen is 7 inches. Which equation represents x, the length of the computer screen in inches?

• x = 7/A

• x = A + 27

• x = A - 2(7)

• x = A/7

The length of a rectangle is 7 inches, and the area of the rectangle is 199.5 square inches. What is the width of the rectangle in inches?

• 28.5 in

• 192.5 in

• 1396.5 in

• 206.5 in