Quiz 8

In the following diagram, if AB and CD are parallel, what is the value of x in terms of b?

• b

• b - 180

• 90 - b

• 180 - b

• (360 - b)/2

• Cannot be determined

In the figure below, if AC = 12, DC = 18, and DB = 15, what is the length of AF?

• 8

• 9

• 10

• 11

• 12

In the following diagram, ABCD is a parallelogram, and BFDE is a square where AB = 20 and CF = 16,

what is the perimeter of the parallelogram ABCD?

• 72

• 78

• 86

• 92

• 96

If the length of a rectangle is increased by 50% and width is decreased by 40%, what happens to the

area of the rectangle?

• 10% increased

• 10% decreased

• 20% increased

• 20% decreased

• None

If the angles of a triangle are in the ratio 2:3:7, the triangle is:

• acute

• isosceles

• obtuse

• right

• equilateral

• 12s

• 24s

• 24 feet

• 36 feet

• 72 feet

• None

• 5

• 4

• 3

• 2

• None of these