Geometry

Margaret has a piece of cardboard that is shaped like a rectangle. The base of the rectangle is 16 inches and the height is 12 1/2 inches. What is the area of the piece of cardboard?

• 57 sq. in.

• 192 sq. in.

• 200 sq. in.

• 250 sq. in.

Which statement about polygons is NOT true?

• If two sides of a triangle are congruent, then their opposite angles are congruent.

• The sum of two angles of a triangle is 180°.

• A regular octagon has 8 equal sides.

• A triangle cannot have more than one obtuse angle.

The circumference of a circle is 40π ft. What is the radius of the circle in feet?

• 10

• 13

• 16

• 20

The diameter of a circle is 22.4 cm. What is the length of the radius?

• 11.2 cm

• 112 cm

• 4.48 cm

• 448 cm

Two of the angles in a triangle measure 57° and 89°. What is the measure of the third angle?

• 39°

• 30°

• 47°

• 34°

Which words best describe an angle that measures less than 90º.

• Obtuse Angle

• Right Angle

• Acute Angle

• Straight Angle

A heptagon is a polygon with _____ sides.

• 6

• 7

• 8

• 9

A circle has ____ degrees.

• 90

• 180

• 360

• 420

The three sides of a triangle measure 20 ft, 29 ft, and 21 feet. What is the perimeter of the triangle?

• 420

• 210

• 60

• 70

What word describes a triangle with 2 congruent sides and 2 congruent angles?

• Equilateral

• Isosceles

• Scalene

• Right