Geometry

Classification of Solids

Faces, Edges and Vertices in Polyhedra

Measuring, Estimating and Drawing Angles

Angles at a Point & vertically Opposite Angles

Types of Triangles

Types of Quadrilaterals

Lengths in Polygons on the Plane

Visualising Solids

Cross Sections of Solids

Lines, Segments and Rays

Complementary and 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

Angles in Quadrilaterals

Lengths in Quadrilaterals

Properties of Quadrilaterals

Identifying Polygons from angle conditions

Drawing and Recognising Shapes with Properties (Investigation)

Triangle problems

Angles in Triangles Revision

Angles and Lengths in Quadrilaterals Revision

Shapes in Fractal Geometry

Symmetries in 3-D Shapes

Angles on Parallel Lines Revision

Harder Angles on Parallel Lines

Centres of Triangles

Geometrical Calculations

Deductive Proofs

Proofs with Triangles

Proofs with Quadrilaterals

Stage 1 - Stage 3

Harder Angles on Parallel Lines

Interactive practice questions

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

Easy

Approx 3 minutes

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

Find the unknown angles, giving reasons.

Find the unknown angle, giving reasons.

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