Page 35 - Year 6 Maths Mastery

Teaching for Mastery: Questions, tasks and activities to support assessment

Mastery Mastery with Greater Depth

Which of these triangles are isosceles? This is a regular pentagon.
Two angles (108° and 36°) are shown.
Explain your decisions.
Which other angles can you work out?

82° Explain your reasoning.

73°
4.2 cm 4.2 cm
26°
73° 34° 36°
3.2 cm

108°

Accurately draw two right-angled triangles with sides of different lengths. A triangle has been drawn carefully. You are told that the biggest angle is
20° larger than the second biggest angle and 40° larger than the smallest angle.
Compare them and describe what’s the same and what’s different about them.
Work out how big each angle is.

A square has two vertices at (0,0) and (3,3). An isosceles triangle has two vertices at (–3,2) and (3,2).
Work out and explain the coordinates where the other two vertices could be.
Explore where the third vertex could be.
A square has two vertices at (–3,0) and (3,0).
Work out and explain the coordinates where the other two vertices could be.

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