Page 25 - STEPS MATHEMATICS 4A

Triangle angles or use RMA
1 cm squared paper

2cm

You can use -2em
squared paper
to draw right angles.

Draw right angles on squared paper to match these.
a C
2cm 4cm
2cm

3cm 3cm
6cm

8cm

1cm 0 1cm
5cm
1cm 4cm

Measure and then draw these in the same way.

Add one line to change each right angle into
a right-angled triangle

Beside each triangle, write isosceles or scalene

REMEMBER

An isosceles triangle has two sides of the same length

A scalene triangle has no sides of the same length.