Investigate and draw other polygons with right angles
Lesson details
Learning outcome
I can investigate right angles in shapes with more than four sides.
Key learning points
- Polygons with more than four sides can contain a right angle.
- Polygons with more than four sides can contain more than one right angle.
- Shapes can be drawn to match a description including angles and numbers of sides.
Keywords
Pentagon - A 2D shape made up of five straight sides and vertices.
Hexagon - A 2D shape made up of six straight sides and vertices.
Common misconception
Pupils may find it hard to recognise right angles presented in unusual orientations.
Encourage pupils to continue to check angles with a right angle measurer. Teach them to recognise where vertices are clearly not right angles and differentiate these from ones that could be right angles.
Teacher tip
This session can be taught practically. Pupils can use geoboards and elastic bands to explore pentagons and hexagons, identifying right angles, and use card strips and split pins to investigate shapes too. Pupils can be presented with strips of different lengths to add further challenge.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Which of these shapes has exactly one right angle?
Q2.Which of these shapes has exactly two right angles?
Q3.Which of these shapes does not have any right angles?
Q4.How many right angles does this shape have?
Q5.Which of these shapes are not quadrilaterals?
Q6.Which statement is correct?
Assessment exit quiz
6 Questions
Q1.Which shape is a pentagon?
Q2.Which shape is a hexagon?
Q3.Look at this pentagon. How many right angles does it have?
Q4.Look at this hexagon. How many right angles does it have?
Q5.Aisha uses six sticks of equal length to make the shape below. She says, ‘I’ve made a hexagon with four right angles.’ Is she correct?
Q6.Laura chooses three of these shapes. The shapes have a total of five right angles. Which three shapes did she choose?
To help you plan your 3 maths lesson on: Investigate and draw other polygons with right angles, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 3 maths lesson on: Investigate and draw other polygons with right angles, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
Explore more key stage 2 maths lessons from the Right angles unit, dive into the full primary maths curriculum, or learn more about lesson planning.