Interior Angles Quiz Form
Test your knowledge of interior angles in geometry. Answer all questions carefully.
What is the sum of the interior angles of a triangle?
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180°
360°
90°
270°
What is the sum of the interior angles of a pentagon?
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540°
360°
720°
900°
Which formula calculates the sum of the interior angles of an n-sided polygon?
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(n-2) × 180°
n × 180°
(n+2) × 180°
(n-1) × 180°
What is the measure of each interior angle in a regular hexagon?
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120°
135°
108°
150°
A regular octagon has how many degrees in the sum of its interior angles?
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1080°
1260°
900°
1440°
If one interior angle of a regular polygon is 140°, how many sides does the polygon have?
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9
7
8
10
Which of these shapes does NOT have equal interior angles?
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Rectangle
Regular pentagon
Equilateral triangle
Irregular quadrilateral
Match each polygon with the sum of its interior angles.
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Rows
Sum of Interior Angles (°)
Triangle
180°
360°
540°
720°
900°
Quadrilateral
180°
360°
540°
720°
900°
Pentagon
180°
360°
540°
720°
900°
Hexagon
180°
360°
540°
720°
900°
Heptagon
180°
360°
540°
720°
900°
How confident are you in your answers about interior angles?
1
2
3
4
5
Explain one real-world example where knowing interior angles is useful.
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