Area and Perimeter of Triangles and Rectangles in the Coordinate Plane

The perimeter of the following shape is:

• 21 units

• 20 units

• 7 units

• 10 units

Find the area of the triangle.

• 8 ft²

• 8 ft³

• 4 ft²

• 4 ft³

What is the area of the triangle?

• 17 units²

• 20 units²

• 10 units²

• 16 units²

What is the area of the triangle?

• 60 square units

• 90 square units

• 45 square units

• 30 square units

A soccer field is outlined by four corners. The soccer field is shown in the coordinate plane.

Which of the following statements is true?

• The vertical distance between B and C is 5 units.

• The area of the figure ABCD is 34 units squared.

• The perimeter of the figure ABCD is 26 units.

• The area of the figure ABCD is 26 units squared.

The area of the following shape is:

The coordinates A(4,5) and B(4,-2) are given in the coordinate plane.

Which of the following pairs will form a rectangle with the given coordinates?

• (5, 5) and (5, -3)

• (-3, 5) and (3, 2)

• (-1, 5) and (-1, -2)

Triangle BCD is rotated 180° clockwise and then dilated by a factor of 4 centered at the origin. The resulting image is triangle B'C'D'. Which statement about the two triangles is true?

• The area of ΔBCD is 4 times the area of ΔB'C'D'.

• The perimeter of ΔBCD is 4 times the perimeter of ΔB'C'D'.

• The corresponding sides of ΔBCD and ΔB'C'D' are congruent.

• The corresponding angles of ΔBCD and ΔB'C'D' are congruent.

The size of a surface. It is measured in square units.

• area

• perimeter

• surface area

• volume