Answers2026-2027_MDCPS_1206315_Geometry Sem 2Special Parallelograms

Area of Composite Figures Answers

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

A
42º
B
56º
C
124º
D
304º
2
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An interior angle of a regular polygon has a measure of 135°. What type of polygon is it?

A
hexagon
B
octagon
C
nonagon
D
decagon
3

Which statements are true about the regular polygon? Select three options.

A
The sum of the measures of the interior angles is 900°.
B
Each interior angle measures 108°.
C
All of the angles are congruent.
D
The polygon is a regular hexagon.
E
The sum of the measures of the interior angles is 180(5 – 2)°.
4

Polygon A B C D E has 5 sides.

Question illustration
A
It is a concave pentagon because segment AE would extend into the inside of the polygon, and it has five sides.
B
It is a convex hexagon because it has six sides and none of the sides would extend into the inside of the polygon.
C
It is a concave hexagon because segment AE would extend into the inside of the polygon, and it has six sides.
D
It is a convex pentagon because it has five sides and none of the sides would extend into the inside of the polygon.
5

A polygon with 5 sides is shown with its exterior angles. The exterior angles are 62 degrees, 66 degrees, 77 degrees, 59 degrees, and (12 x) degrees.

Question illustration
A
6
B
8
C
10
D
12
6

Which polygon has an interior angle sum of 900°?

A
A polygon has 8 sides.
Option A
B
A polygon has 10 sides.
Option B
C
A polygon has 9 sides.
Option C
D
A polygon has 7 sides.
Option D
7

A polygon with 7 sides is shown. An angle goes inside of the shape.

Question illustration
A
convex heptagon
B
concave heptagon
C
concave octagon
D
convex octagon
8

Polygon A B C D E F has 6 sides. Exterior angle A is 62 degrees, exterior angle B is 44 degrees, exterior angle C is 70 degrees, exterior angle D is 60 degrees, and exterior angle E is 43 degrees.

Question illustration
A
79°
B
81°
C
91°
D
99°
9

Each exterior angle of a regular decagon has a measure of (3x + 6)°. What is the value of x?

A
x = 8
B
x = 10
C
x = 13
D
x = 18
10

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

A
68°
B
78°
C
88°
D
98°

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