CAIE IGCSE Mathematics Extended E4.6.3 Know and Use Angle Properties of Regular and Irregular Polygons Questions

Practise Extended CAIE IGCSE Mathematics by applying interior and exterior angle sums to polygon problems.

Exam points

Use interior and exterior angle sums for regular and irregular polygons.
Calculate unknown angles in polygons from known sides or angles.
Explain polygon angle results using appropriate geometric properties.

[Maximum number: 4]

A regular pentagon has an exterior angle, d.

A regular hexagon has an interior angle, h.
Find the fraction $\frac{d}{h}$ .
Give your answer in its simplest form.

$\frac35$ cao nfww
B3 for $\frac{72}{120}$ , or B2 for d=72 or h=120, or M1 for $360\div5$ oe or $180-(360\div6)$ oe

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CAIE IGCSE Mathematics Extended E4.6.3 Know and Use Angle Properties of Regular and Irregular Polygons Questions question 1