Polygons and Quadrilaterals Review

Diagonals are congruent in all  ________.

• quadrilaterals

• rectangles

• rhombuses

• parallelograms

a quadrilateral has diagonals that bisect each other

• Always

• Sometimes

• Never

JKLM is a rhombus. If JM = (2x+13) cm and JK = (6x+1) cm, solve for x.

• x = 3

• x = 4

• x = 5

• x = 9

• 7

• 8

• 85

• None of these

Find the interior angle sum for each polygon. Round your answer to the nearest tenth if necessary.

• A

• B

• C

• D

How many sides does a polygon have if the sum of its interior angles is 3060 degrees?

• 16

• 17

• 18

• 19

What is the value of x?

• 26.25

• 38.75

• 24

• 25.125

Find the value of x

• 141

• 150

• 135

• 163

If BA=5x+5 and AD=10x-20, find BD.

• 60

• 30

• 5

• 10

Find the value of x if m∠CDA = 9x+3 and m∠EDA = 6x+15.

• 39

• 4

• 4.8

• -4