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Interior Angles
Finding Angle measures of polygons
10
Mathematics
8th Grade
12/03/2012

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Cards

Term
What is the sum of the measures of the interior angles of a regular polygon with 7 angle?
Definition
(7 - 2) • 180 = 900°
Term
What is the sum of the measures of the interior angles of a 12 sided polygon?
Definition
(12 - 2) • 180 = 1800°
Term
What is the sum of the measures of the interior angles of a hexagon?
Definition
(6 - 2) • 180 = 720°
Term
A pentagon has the following known angle measures:  105°, 120°, 98° and 117°.  Find the missing 5th angle.
Definition

(5 - 2) • 180 = 540° (Total)

540 - 105 - 120 - 98 - 117 = 100°

The missing 5th angle is 100°

Term
What is the measure of one interior angle of a regular octagon?
Definition

(8 - 2) • 180 = 1080°

1080° ÷ 8 = 135°

Term
What is the measure of one interior angle of a regular 5 sided polygon.
Definition

(5 - 2) • 180 = 540°

540° / 5 = 108°

Term

 

 

Find the measure of one interior angle of this regular polygon.

 

[image]

Definition

(6 - 2) • 180 = 720°

720° / 6 = 120°

Term

Find the measure of one interior for this regular polygon:

[image] 

Definition

(9 - 2) • 180 = 1260°

1260 / 9 = 140°

Term

What is the sum of the measures of the angles for this polygon?

[image]

Definition
(5 - 2) • 180 = 540°
Term
A quadrilateral has the following angles: 80°, 90°, and 100°.  Find the missing 4th angle.
Definition

(4 - 2) • 180 = 360°

360 - 80 - 90 - 100 = 90°

The missing angle 90°

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