Find missing lengths in similar separate shapes
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Lesson details
Key learning points
- 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.
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3 Questions
Q1.
Which shape is similar to shape A?
B
D
Q2.
Are the two shapes similar?
Yes
Q3.
Are the two shapes similar?
No
3 Questions
Q1.
The two shapes are similar. What is the scale factor of the enlargement?
3
4
5
Q2.
These two shapes are similar, what is the length of side marked x?
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