Year 5

Calculating angles within a shape 1

Year 5

Calculating angles within a shape 1

Lesson details

Key learning points

  1. In this lesson, we will learn about different types of triangle and how to calculate angles within a triangle.

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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5 Questions

Q1.
What is the size of the missing angle?
An image in a quiz
120°
Correct answer: 30°
60°
Q2.
What is the size of the missing angle?
An image in a quiz
240°
30°
Correct answer: 60°
Q3.
What is the size of the missing angle?
An image in a quiz
50°
Correct answer: 55°
Q4.
How is this drawing incorrectly drawn?
An image in a quiz
Correct answer: the angles 130° and 50° are not drawn like a straight line
The angles add up to greater than 180°
The angles do not add up to 360°
Q5.
What angle would 4pm show?
An image in a quiz
Correct answer: 120°
40°
90°

5 Questions

Q1.
What type of triangle has 3 different angles and 3 different sides
equilateral
isosceles
right angle
Correct answer: scalene
Q2.
What do angles inside a triangle add up to?
Correct answer: 180°
360°
90°
Q3.
What are the size of the angles within an equilateral triangle?
180°
Correct answer: 60°
It's impossible to work out without one angle
Q4.
What is the size of angle a?
An image in a quiz
105°
115°
Correct answer: 65°
90°
Q5.
What is the size of angle b?
An image in a quiz
Correct answer: 105°
115°
65°
90°