Page 25 - STEPS MATHEMATICS 4A
P. 25
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.