Geometry

Faces, Edges and Vertices in Polyhedra

Platonic Solids (Investigation)

Classifying and Naming Angles

Naming an Angle

Classifying an Angle

Angles Revision

Types of Triangles

Triangles in the movies (Investigation)

Types of Quadrilaterals

Symmetry in the world around us (Investigation)

Lengths in Polygons on the Plane

Visualising Prisms

Cross Sections of Prisms

Pretzel Solids (Investigation)

Lines, Line Segments and Rays

Complementary & Supplementary Angles

Angles in Triangles

Interior and Exterior Angles of Polygons

Exterior angle sum and other calculations

Cointerior Angles

Alternate Angles

Corresponding Angles

Angles and Parallel Lines

Identifying Parallel Lines

Constructions with a compass (Investigation)

Building Bridges (Investigation)

Angles in Quadrilaterals

Lengths in Quadrilaterals

Using Properties of Quadrilaterals

Identifying Polygons from angle conditions

Drawing Shapes with Properties (Investigation)

Drawing quadrilaterals with Properties (Investigation)

Triangle problems (isosceles and equilateral)

Fishing for Polygons (Investigation)

Types of Lines Revision

Angles in Triangles Revision

Angles and Lengths in Quadrilaterals Revision

Angles on Parallel Lines Revision

Harder Angles on Parallel Lines

Geometrical Calculations

Deductive Proofs

Proofs with Triangles

Proofs with Quadrilaterals

Proofs Using Congruent Triangles

Proofs Using Similar Triangles

United Kingdom England

Key Stage 3

Harder Angles on Parallel Lines

Interactive practice questions

Find $x$x, giving reasons for your answer.

Easy

3min

In the diagram, $EF\parallel BC$EF∥BC and $ED\parallel BA$ED∥BA. Find the unknown angle, giving reasons.

Easy

2min

Find the unknown angles, giving reasons.

Easy

2min

Find the unknown angle, giving reasons.

Easy

6min

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