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Polygon Sum Interior & Exterior Angles Review

Authored by Lydia Scott

Mathematics

9th - 12th Grade

CCSS covered

Used 3+ times

Polygon Sum Interior & Exterior Angles Review
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18 questions

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1.

FILL IN THE BLANK QUESTION

1 min • 1 pt

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

Answer explanation

(8 - 2)*180 = 1080

2.

FILL IN THE BLANK QUESTION

1 min • 1 pt

What is the sum of the measures of the interior angles of a 25-gon?

Answer explanation

(25 - 2)*180 = 4140

3.

FILL IN THE BLANK QUESTION

1 min • 1 pt

What is the measure of each interior angle of a regular hexagon?

Answer explanation

Sum of interior angles for a hexagon is 720.

To find one, you do sum/# of angles.

So,

720/6 = 120

4.

FILL IN THE BLANK QUESTION

1 min • 1 pt

What is the measure of each interior angle of a regular 16-gon?

Answer explanation

Sum of interior angles for a 16-gon is 2520.

To find one, you do sum/# of angles.

So,

2520/16 = 157.5

5.

FILL IN THE BLANK QUESTION

1 min • 1 pt

What is the sum of the measures of the exterior angles of a decagon?

6.

FILL IN THE BLANK QUESTION

1 min • 1 pt

What is the measure of each exterior angle of a regular 30-gon?

Answer explanation

Sum of exterior/# of angles

Sum of exterior angles is always 360!

360/30 = 12

7.

FILL IN THE BLANK QUESTION

1 min • 1 pt

If the exterior angle of a regular polygon is 22.5o, how many sides does it have?

Answer explanation

Sum of exterior/exterior angle measure

360/22.5 = 16

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