Tony is drawing a regular polygon. He has drawn two of the sides with an interior
angle of 120°, as shown below.
How many sides will the regular polygon have when Tony completes his drawing?
A. 6
B. 7
C. 8
D. 9
MA.912.G.2.2: Determine the measures of interior and exterior angles of polygons,
justifying the method used
Review the triangle below. What is the measure of the exterior angle shown?
A.42°
B.64°
C.117°
D.126°
MA.912.G.2.2: Determine the measures of interior and exterior angles of polygons,
justifying the method used
John is drawing a regular polygon. He has drawn two sides with an exterior angle
measure of 45°, as shown. When John completes his regular polygon, what will be
the sum, in degrees, of the measures of the interior angles?
Gridded Response
Correct Answer: 1080
MA.912.G.2.2: Determine the measures of interior and exterior angles of polygons,
justifying the method used
In the pentagon below, what is the measure of the exterior angle shown?
A.45°
B.81°
C.99°
D.137°
MA.912.G.2.2: Determine the measures of interior and exterior angles of polygons,
justifying the method used
Mindy is drawing a regular polygon. She has drawn two sides with an exterior
angle measure of 36°, as shown below.
When she completes her regular polygon, what will be the sum, in degrees, of
the measures of the interior angles?
Gridded Response Correct Answer: 1440
MA.912.G.2.2: Determine the measures of interior and exterior angles of polygons,
justifying the method used
Sonja is drawing a regular polygon. She has drawn two of the sides with an interior
angle of 150°, as shown.
How many sides will the regular polygon have when Sonja completes her drawing?
A.10
B.11
C.12
D.13
MA.912.G.2.2: Determine the measures of interior and exterior angles of polygons,
justifying the method used
Find the value of x in the pentagon below.
A. 18
B. 18.9
C. 19.6
D. 20
MA.912.G.2.2: Determine the measures of interior and exterior angles of polygons,
justifying the method used
Find the value of x in the octagon below.
A.34
B.36
C.57
D.69
MA.912.G.2.2: Determine the measures of interior and exterior angles of polygons,
justifying the method used
A regular pentagon and a regular hexagon share a vertex, as shown below.
What is the value of x, in degrees?
Gridded Response
Correct Answer: 13
MA.912.G.2.2: Determine the measures of interior and exterior angles of polygons,
justifying the method used
A regular pentagon shares each of its sides with an equilateral triangle, as shown.
What is the value of x, in degrees?
Gridded Response
Correct Answer: 132
MA.912.G.2.2: Determine the measures of interior and exterior angles of polygons,
justifying the method used