Help Year 6 pupils find missing angles in triangles, with 30 questions and clear triangle diagrams in this print-and-go maths pack.

Pupils begin by finding the third angle of ten triangles when two angles are given, using the fact that the angles in a triangle add up to 180°. They then work with special triangles, including right-angled, isosceles and equilateral triangles, where small marks show equal sides and a small square shows a right angle. The puzzle page has a right-angled triangle question, an isosceles triangle with an obtuse angle, true or false statements, an explain question about a set of angles that cannot make a triangle, a set to circle, word problems about equal angles and an open question with more than one correct answer.

What is included:
• Page 1: front page with an I can list, the national curriculum link, two worked examples (a scalene and an isosceles triangle) and a top tip
• Page 2: Find the Missing Angle. Ten triangles (Q1–10)
• Page 3: Special Triangles. Ten triangles (Q11–20)
• Page 4: Triangle Puzzles. Reasoning and word problems (Q21–30)
• Page 5: answer key, with the accepted alternatives listed for the open questions
• Page 6: a short thank-you page from FUN CASE

Curriculum link: Year 6 geometry (properties of shapes) in the national curriculum for England (KS2): “find unknown angles in any triangles, quadrilaterals, and regular polygons”. The pack suits Year 6 lessons, starters, homework and revision before SATs, and also works as extra practice for confident Year 5 pupils. The diagrams are not drawn accurately, so pupils calculate rather than measure; no protractor is needed. Written in British English.

Format: one non-editable PDF on A4 pages, ready to print. Written in British English. All original content by Mathew Sunday, FUN CASE. Single-classroom licence: please do not share or post online.