Year 7

Year 7

# Finding unknown angles

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## Lesson details

### Key learning points

1. In this lesson, we will learn how to use the term 'vertically opposite' and solve more angle problems.

### 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.

## Video

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## Worksheet

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## Starter quiz

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### 5 Questions

Q1.
If Angle A is greater than Angle B, how can I express this mathematically?
A < B
A = B
B > A
Q2.
If Angle Y = Angle X = Angle Z, which of the following is true?
X + Y + Z = 180
X + Y + Z = 3A
Correct answer: X + Y + Z = 3X
X + Y = Z
Q3.
If g > h, then which of the following results in the greater value?
180 - g
The previous two responses result in the same amount
Q4.
You are given that: 360 - R = S. Which of the following statements is correct?
360 + S - R = 0
360 = S - R
Correct answer: 360 = S + R
S = 180
Q5.
If I have 5 equal angles around a point, what do each of the angles individually equal?
36 degrees
360 degrees
90 degrees

## Exit quiz

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### 5 Questions

Q1.
A circle split into 4 equal parts would result in the equal angles around the centre point being...
180 degrees
360 degrees
60 degrees
Q2.
If a regular octagon was split into 8 equal parts, each equal angle at the centre would be...
360 degrees
60 degrees
90 degrees
Q3.
You are given that: a + a + a + a = 180. What is the value of a?
180
60
720
Q4.
If I have an equilateral triangle and a square around a point, what is the remaining angle left?
150 degrees