Page 228 - SK Year 5 Mathematics DLP
P. 228
S
3 a b
projection
line
b
p
a
R
The value of angle a is .
The value of angle b is .
Outer scale reading in S: 0°
Outer scale reading in R: 120°
The value of angle p = −
=
Name the polygon which has a right
angle 90° and acute angle.
Copy the regular polygon diagrams below.
Measure and write down the value of the interior angles.
a b Q c
q
p
w
p w
220 • Guide pupils to solve the ‟Try These” question while ensuring that they
6.2.1 measure the value of the angles using the correct technique.
• Carry out a project of measuring angles of a polygon mask to reinforce
pupils’ understanding.
