PracticeQuestionsYears 1–7
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Right angles, lines and perimeter

Year 3 · Lower Key Stage 2 · 3G-1, 3G-2, 3M-1 — Right angles; perpendicular and parallel lines; perimeter

Draft — awaiting teacher review

Builds on: Sides, vertices and shape names (Year 2)

I

Concept Anchor

A right angle is a quarter turn, like the corner of a book. Perpendicular lines meet at a right angle. Parallel lines never meet. Perimeter is the total length of all the sides.

Worked example

Find the perimeter of a square with sides of 3 cm.

  1. 1.A square has 4 equal sides.
  2. 2.3 + 3 + 3 + 3 = 12.
  3. 3.The perimeter is 12 cm.
II

Guided Check

Are the opposite sides of a rectangle parallel or perpendicular?

    III

    Independent Diagnostic Practice

    Q1Year 33G-1 — Right angles in shapes·Fluency·●○○Draft — awaiting teacher review

    How many right angles does a square have?

    Q2Year 33G-2 — Perpendicular and parallel lines·Reasoning·●●○Draft — awaiting teacher review

    Two lines meet at a right angle. What are they called?

    Q3Year 33M-1 — Perimeter of a rectangle·Problem Solving·●●○Draft — awaiting teacher review

    A rectangle is 6 cm long and 2 cm wide. What is its perimeter?