Find missing exterior angles of polygons

Find missing exterior angles of polygons

Lesson details

Key learning points

  1. In this lesson, we will calculate missing exterior angles of any regular or irregular polygon.

Licence

This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

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3 Questions

Q1.
An image in a quiz
a
Correct answer: b
c
d
Q2.
An image in a quiz
a
b
c
Correct answer: d
Q3.
An image in a quiz
a
b
c
Correct answer: d

5 Questions

Q1.
What is the sum of exterior angles of any polygon?
180º
Correct answer: 360º
540º
Different with each polygon
Q2.
Calculate the size of angle a.
An image in a quiz
15º
Correct answer: 30º
67º
73º
Q3.
Calculate the size of angle b.
An image in a quiz
134º
Correct answer: 44º
48º
98º
Q4.
4. What is the size of each exterior angle of a regular 15 sided polygon?
Correct answer: 24º
42º
48º
72º
Q5.
5. A regular polygon has an exterior angle of 30º. How many sides does it have?
10
Correct answer: 12
14
16

Lesson appears in

UnitMaths / Polygons 2 (Interior and Exterior)

UnitMaths / Revise - Angles, Polygons, Bearings