Pretest

Question 1

Which polygon has an interior angle sum of 1080 degrees ?

Revolt · Accepted Answer

D: Image with description A polygon with 8 sides and no interior angles greater than 180 degrees.

Question 2

Three interior angles of a quadrilateral measure 55 degrees , 117 degrees , and 120 degrees What is the measure of the fourth interior angle?

Revolt · Accepted Answer

A: 68 degrees

Question 3

Which polygon has an interior angle sum of 900 degrees ?

Revolt · Accepted Answer

D: Image with description A polygon with 7 sides and no interior angles greater than 180 degrees.

Question 4

Which statements are true about polygons? Choose three correct answers.

Revolt · Accepted Answer

A: The extension of at least one side or diagonal in a concave polygon will contain a point that is inside the polygon.; C: The sides of a polygon are segments that intersect exactly two other segments, one at each endpoint.; D: If all of the sides of a convex polygon are extended, none of them will contain any points that are inside the polygon.

Question 5

The sum of all but one interior angle of a heptagon is 776 degrees What is the measure of the final interior angle?

Revolt · Accepted Answer

B: 124 degrees

Question 6

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

Revolt · Accepted Answer

A: 135 degrees

Question 7

Each exterior angle of a regular decagon has a measure of open paren 3 x plus 6 close paren degrees What is the value of x ?

Revolt · Accepted Answer

B: x is equal to 10

Question 8

An interior angle of a regular polygon has a measure of 135 degrees What type of polygon is it?

Revolt · Accepted Answer

C: octagon

Question 9

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

Revolt · Accepted Answer

A: 60 degrees

Question 10

What is the sum of the measures of the interior angles of a 12 -gon?

Revolt · Accepted Answer

C: 1800 degrees

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