Polygons and Quadrilaterals Optional HW

What is the sum of the interior angles inside an octagon?

• 135

• 1440

• 1080

• 2160

What is the measure of one interior angle in a regular heptagon?

• 128.57

• 900

• 180

• 120

What is the measure of one exterior angle in regular dodecagon?

• 150

• 30

• 36

• 144

Find x

• 84

• 21

• 43.5

• none of the above

A polygon has a sum of interior angle measures equal to 1620°. How many sides does the polygon have?

• 9
• 11
• 13
• 7

Find the value of y.

• 125
• 135
• 140
• 110

A regular polygon has an EXTERIOR angle with a measure of 60.  How many sides does it have?

• 6
• 120
• 3
• 60

The legs of an isosceles trapezoid are _________.

• Congruent

• Supplementary

• Parallel

• Perpendicular

The diagonals of an isosceles trapezoid are __________.

• Congruent

• Supplementary

• Parallel

• Perpecdicular

FEDC is an isosceles trapezoid. Find the missing angle.

• $180\degree$

• $140\degree$

• $120\degree$

• $60\degree$