# Polygon Internal Angles

14 Questions | Total Attempts: 169

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Practice and use the sum rules for the internal angles of polygons. Calculate angle sums and individual angles.

Related Topics
• 1.
How many sides does an octagon have?
• 2.
A five-sided figure is called a
• A.

Triangle

• B.

Nonagon

• C.

Pentagon

• D.

Pentagram

• E.

Fiveagon

• 3.
What the name given to a four-sided figure of any side length?
• 4.
How many sides does a dodecagon have?
• A.

10

• B.

12

• C.

20

• D.

21

• E.

22

• 5.
This shape is a:
• A.

Hexagon

• B.

Convex hexagon

• C.

Mess

• D.

Concave hexagon

• E.

Hectare

• 6.
This shape is a
• A.

Nonagon

• B.

Octagon

• C.

Polyhedron

• D.

Somethingagon

• E.

Decagon

• 7.
What is the name given to this shape -
• 8.
What is the sum of the internal angles of a triangle?
• A.

200°

• B.

90°

• C.

180°

• D.

100°

• E.

360°

• 9.
What is the sum of the internal angles of a pentagon?
• A.

180°

• B.

360°

• C.

720°

• D.

1080°

• E.

540°

• 10.
What is the sum of the external angles of any polygon?
• 11.
How big is angle a?
• 12.
How big is q
• A.

393°

• B.

100°

• C.

120°

• D.

131°

• E.

720°

• 13.
How many degrees is b?
• A.

89.5°

• B.

180°

• C.

1800°

• D.

90°

• E.

11°

• 14.
How big are the angles marked d?