Triangles: Year 7 5.2 practice

What you need to know

Check yourself against these “I can” statements.

I can work out missing angles in a triangle
I can use the properties of equilateral and isosceles triangles to solve problems
I can describe the lines of symmetry and rotational symmetry of triangles
I can explain why the angles in a triangle add up to 180°
I can explain why an exterior angle of a triangle equals the two opposite interior angles added together

Practise this topic

1 resource

Angle Facts

Straight lines, points, triangles, quadrilaterals, parallel lines and regular polygons, grouped by the missing angle. From Standard, 55° and 125° are both answers; Hard adds simple algebra.

KS3 and GCSE

These are the pages for Triangles in the Year 7 scheme of work, following Pearson Edexcel Maths Progress Delta 1. Open this topic in Mr Wells Maths to see it alongside the rest of the course.