Lesson details

Key learning points

  1. In this lesson, we will learn about the conditions for congruent shapes and identify congruent shapes.

Licence

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3 Questions

Q1.
Triangle ABC is similar to triangle ADE. What is the length of side marked x? (not drawn to scale)
12 cm
15 cm
16 cm
Correct answer: 20 cm
Q2.
The diagram (not drawn to scale) shows two similar triangles. Work out the side length AD.
Correct answer: 16.5 cm
22 cm
27.5 cm
5.5 cm
Q3.
The diagram (not drawn to scale) shows two similar triangles. Work out the side length BD.
16.5 cm
22 cm
27.5 cm
Correct answer: 5.5 cm

3 Questions

Q1.
Give a reason why this pair of triangles are congruent.
AAS
ASA
RHS
Correct answer: SSS
Q2.
Give a reason why this pair of triangles are congruent.
AAS
ASA
Correct answer: RHS
SSS
Q3.
If this pair of triangles are congruent, which statement is correct?
a < b
Correct answer: a = b
a > b

Lesson appears in

UnitMaths / Similarity