Unit 17 – Shapes and angles
1 We can talk about the properties of plane shapes by describing their sides, angles and any lines of symmetry.
Riana answers ‘yes’ to both questions. What shape did she draw?
2 Look at the properties of this shape. What is its name? Number of straight sides
5 0
Number of curved sides
Are sides all equal in length?
Yes
Number of right angles 0 Number of angles greater than a right angle 5 Number of angles smaller than a right angle 0 How many lines of symmetry? 5
3 We can draw and label line segments to make 2D shapes. Look at the points here. Draw line segments BD, BE and DE.
What shape have we made? Is line segment BD longer, shorter or equal to line segment BE? Is the shape symmetrical?
A
B
E
C
D
217
9781380050687__text.indb 217
03/05/2022 10:21
Made with FlippingBook Learn more on our blog