1.) Given the figure at the right, what is the relationship between the interior ∠T and exterior ∠S?

A. Interior ∠T and exterior ∠S are complementary.

B. Interior ∠T and exterior ∠S are vertical.

C. Interior ∠T and exterior ∠S are supplementary.

D. Interior ∠T and exterior ∠S are congruent.


2.) Given a polygon having the sum of linear pairs on vertices which is 900 and the sum of the interior angles is 540, then what is the sum of its exterior angles?

A. 180

B. 360

C. 540

D. 90


3.) If a polygon is divided into 9 triangles, then what is the sum of the measures of the interior angles of the polygon?

A. 1 620

B. 1 260

C. 360

D. 1 980


4.) A stop sign is in the shape of regular octagon. What is the measure of each of the interior angles of the stop sign?

A. 108

B. 144

C. 180

D. 135


5.) Find the measure of one exterior angle of a regular polygon whose sum of the interior angles is 2,340.

A. 13

B. 32

C. 24

D. 25