No. 631Ages 11 to 14
Types of Angle
Acute, right, obtuse and reflex angles shown at a glance, with clear diagrams and a quick classifying task.
No. 632Ages 11 to 14
Angles on a Line and Around a Point
The two rules that unlock missing angles, on a straight line and all the way around a point.
No. 633Ages 11 to 14
Angles in a Triangle
Why every triangle adds up to 180 degrees, with a worked example, the four triangle types and angles to find.
No. 634Ages 11 to 14
Angles in Quadrilaterals
Every quadrilateral totals 360 degrees, plus the special shapes and the properties that define them.
No. 635Ages 11 to 14
Parallel Lines and Transversals
Corresponding, alternate and co-interior angles made simple with the F, Z and C shapes.
No. 636Ages 11 to 14
Properties of Polygons
The interior angle sum formula, a tidy polygon table and regular shapes worked right out.
No. 637Ages 11 to 14
Area of 2D Shapes
The five area formulae a Year 8 needs, each with a labelled shape and a worked sum.
No. 638Ages 11 to 14
Perimeter and Circumference
Radius, diameter and circumference explained, with pi and the formulae you actually use.
No. 639Ages 11 to 14
Pythagoras' Theorem
The rule for right-angled triangles, a full worked example and neat Pythagorean triples to practise.
Type or write inNo. 640Ages 11 to 14
Geometry Practice
A mixed page of geometry questions with write-in space and a full answer key.