Geometry 2-D

A four-pointed star is created with four isosceles triangles and a square, as shown below. If the height of each triangle is 8 inches and one side of the square is 3 inches. What is the area, in square inches, of the star?

Two vertices of a rectangle are located at (-5,4) and (6,4). The area of the rectangle is 66 square units. Which of the following could be the coordinates of the other two vertices?

• (-5,-2) and (6,-2)

• (-5, -5) and (6,-5)

• (-5,8) and (6,8)

• (-5,9) and (6,9)

What is the area, in square units, of the triangle shown in the coordinate plane?

A triangle, ABC, has coordinates A (3,2), B (3,8), and C (8,2). What is the length of the shortest side of Triangle ABC?

• 1 unit

• 3 units

• 5 units

• 6 units

A set designer for a play cut a triangular piece from a wooden trapezoid board to create the set.

What is the area, in square inches, of the wooden board after the triangular piece was removed?

The points of the coordinate plane shown below are two of the vertices of a square.

Part A: Which of the following are the coordinates of the other two vertices of the rectangle?

• (4,5)

• (5,4)

• (-4,-3)

• (-3,-4)

• (6,5)

What is the perimeter of the rectangle?

• 64 units

• 16 units

• 32 units

• 24 units

A circle is a plane figure with ____ sides.

• 1

• 0

• 10

• 4

Find the area of the circle

• 43.96

• 153.86

• 87.82

• 307.72

Find the circumference of the circle.

• 125.6 km

• 31.4 km

• 62.8 km

• 15.7 km