Find missing lengths in similar separate shapes

Find missing lengths in similar separate shapes

Lesson details

Key learning points

  1. In this lesson, we will use scale factors to find missing side lengths in similar shapes. We will practise using our knowledge of proportion to calculate missing lengths.

Licence

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3 Questions

Q1.
Which shape is similar to shape A?
B
Correct answer: C
D
Q2.
Are the two shapes similar?
Correct answer: No
Yes
Q3.
Are the two shapes similar?
No
Correct answer: Yes

3 Questions

Q1.
The two shapes are similar. What is the scale factor of the enlargement?
Correct answer: 2
3
4
5
Q2.
These two shapes are similar, what is the length of side marked x?
Correct answer: 10 cm
16 cm
2.5 cm
9 cm
Q3.
These two shapes are similar, what is the length of side marked x?
10 cm
16 cm
4 cm
Correct answer: 8 cm

Lesson appears in

UnitMaths / Similarity