Unit 3 Retest

The measures of 13 angles of a 14 sided polygon add up to 2014° . What is the fourteenth angle measure?

• 146°

• 2060°

• 2520°

• 540°

If the exterior angle drawn measures 150°, and the measure of ∠D is twice that of ∠E , find the measure of ∠E.

Tags

CCSS.8.G.A.5

If the exterior angle drawn measures 150°, and the measure of ∠D is twice that of ∠E , find the measure of ∠D.

Tags

CCSS.8.G.A.5

A hexagon whose six angle measures are  69° ,  108° ,  135° ,  204° ,  b° , and  2b° .

What is the measure of the unknown angle measures?

• 68° and 136°

• 516° and 720°

• 204° and 68°

• 204 ° and 516°

Determine the measure of the fourth interior angle of a quadrilateral if you know the other three measures are  89°  , 80° and  104° .

• 87°

• 180°

• 360°

• 273°

The table below contains a pattern formed by the number of sides and the measure in degrees of each exterior angle of several regular convex polygons.

If the pattern in the table continues, which statement is true?

• As the number of sides in the polygon increases by 1, the measure of each exterior angle decreases by 25%.

• The product of the number of sides in the polygon and the measure of each exterior angle is a constant.

• The measure of each exterior angle is a multiple of 6 degrees.

• If the number of sides in the polygon is even, the measure of each exterior angle is a multiple of 3 degrees.

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

• 360°

• 180°

• 1080°

• 1440°

A polygon has an interior angle sum of 2520°. How many sides must the polygon have?

What is the m∠S?

• 120°

• 77°

• 43°

• 110°

Tags

CCSS.8.G.A.5

What is the value of x?

• 20

• 18.5

• 103

• 21

Tags

CCSS.8.G.A.5