1. Similar Triangles – Foundation – GCSE Questions – AQA
These questions are the same format as previous GCSE exams.
COPY means they use the exact same numbers as the original GCSE question.
Otherwise, they are clone questions using different numbers.
The worksheets are provided in 2 sizes.

2. Printing To print handouts from slides -
Select the slide from the left. Then click:
File > Print > ‘Print Current Slide’
To print multiple slides -
Click on a section title to highlight all those slides,
or press ‘Ctrl’ at the same time as selecting slides to
highlight more than one. Then click:
File > Print > ‘Print Selection’
To print double-sided handouts -
Highlight both slides before using ‘Print Selection’.
Choose ‘Print on Both Sides’ and ‘Flip on Short Edge’.

3. AQA Foundation: May 2018 Paper 1, Q4
Which shape is similar to shape X? 1
Which shape is similar to shape X?
Circle the correct letter.
[1 mark]
Circle the correct letter.
[1 mark] X X A A C C D D B B
AQA Foundation: May 2018 Paper 1, Q4
AQA Foundation: May 2018 Paper 1, Q4 1
Which shape is similar to shape X? 1
Which shape is similar to shape X?
Circle the correct letter.
[1 mark]
Circle the correct letter.
[1 mark] X X A A C C D D B B

5. AQA Foundation: June 2017 Paper 3, Q16
Triangles ABC and DEF are similar. 1
Triangles ABC and DEF are similar. B B E
Not drawn
accurately E
Not drawn
accurately
11 cm
11 cm
38°
𝑥 cm
38°
𝑥 cm 𝑦 𝑦 A D A D
8 cm C
4 cm F
8 cm C
4 cm F
[2 marks]
[2 marks]
1 (a)
Work out the value of 𝑥.
1 (a)
Work out the value of 𝑥.
Answer
Answer
1 (b)
Write down the size of angle 𝑦.
[1 mark]
1 (b)
Write down the size of angle 𝑦.
[1 mark]
Answer
degrees
Answer
degrees
AQA Foundation: June 2017 Paper 3, Q16
AQA Foundation: June 2017 Paper 3, Q16 1
Triangles ABC and DEF are similar. 1
Triangles ABC and DEF are similar. B B E
Not drawn
accurately E
Not drawn
accurately
11 cm
11 cm
38°
𝑥 cm
38°
𝑥 cm 𝑦 𝑦 A D
8 cm C
4 cm F A D
8 cm C
4 cm F
[2 marks]
[2 marks]
1 (a)
Work out the value of 𝑥.
1 (a)
Work out the value of 𝑥.
Answer
Answer
1 (b)
Write down the size of angle 𝑦.
[1 mark]
1 (b)
Write down the size of angle 𝑦.
[1 mark]
Answer
degrees
Answer
degrees

7. AQA Foundation: June 2018 Paper 3, Q25
A and B are similar shapes.
B is an enlargement of A with scale factor 2.5 1
A and B are similar shapes.
B is an enlargement of A with scale factor 2.5
15 cm
15 cm 𝑦 𝑦 𝑎
121° 𝑎
121°
3 cm
3 cm 𝑥
Not drawn
accurately 𝑥
Not drawn
accurately
Work out the values of 𝑎, 𝑥 and 𝑦
Work out the values of 𝑎, 𝑥 and 𝑦
[3 marks]
[3 marks] 𝑎=
degrees 𝑎=
degrees 𝑥= cm 𝑥= cm 𝑦= cm 𝑦= cm

11. AQA Foundation: June 2018 Paper 3, Q25
A and B are similar shapes.
B is an enlargement of A with scale factor 2.5
15 cm 𝑦 𝑎
121°
3 cm 𝑥
Not drawn
accurately
Work out the values of 𝑎, 𝑥 and 𝑦
[3 marks] 𝑎=
degrees 𝑥= cm 𝑦= cm

14. AQA Foundation: June 2018 Paper 3, Q25
A and B are similar shapes.
B is an enlargement of A with scale factor 2.5
15 cm 𝑦 𝑎
121°
3 cm 𝑥
Not drawn
accurately
Work out the values of 𝑎, 𝑥 and 𝑦
[3 marks]
a = same
𝑥 = 3 × 2.5 = 7.5
𝑦 = 15 ÷ 2.5 = 6
121 𝑎=
degrees
7.5 𝑥= cm 6 𝑦= cm

15. tom@goteachmaths.co.uk Questions? Comments? Suggestions?
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