Similar triangles

Maths

Similarity and enlargement

Fill in the gap: if one shape is an enlargement of another, then these shapes are called ________ shapes.

Fill in the gap: in all similar shapes, corresponding __________ are equal.

Fill in the gap: corresponding sides of similar shapes are all enlarged by the same __________.

What is the scale factor of enlargement from ABC to LMN?

Shape 3 has been enlarged about point (1, 3) with scale factor -2

Shape A has been enlarged by scale factor -2

Shape B has been enlarged by scale factor -2, about (1,3)

Which of these is an incomplete description of an enlargement?

Shape A has been enlarged by scale factor 2

Shape A has been enlarged by scale factor 2.5, centre (1, 2)

Shape A has been enlarged by scale factor 5, centre (2, 1)

Which of the following is the correct description of the below enlargement?

The object has been enlarged by scale factor -2, centre (1,0)

The object has been enlarged by scale factor 0.2, centre (1,0)

The object has been enlarged by scale factor 2, centre (1, 0)

The object has been enlarged by scale factor 2.2, centre (1,0)

A shape has been enlarged and the image has a larger area and is in a different orientation to the object. Which of the following options could describe this enlargement?

A shape has been enlarged and the image has a smaller area than the object and is in the same orientation. Which of the following options could describe this enlargement?

The object has been enlarged by scale factor -0.2, centre (1,0)

The object has been enlarged by scale factor -2, centre (1, 0)

A shape has been enlarged and the image has a smaller area than the object and has a different orientation. Which of the following options could describe this enlargement?

Similar triangles

Lesson outcome