Measuring and drawing angles (AQA GCSE Maths): Flashcards

A protractor is an instrument to measure and draw angles

Degrees ($°$)

$0°$ to $180°$

On the vertex of the angle

One line that forms the angle

Scale starting with $0°$ on aligned line

Angle greater than $180°$

$360° - \text{smaller angle}$

Estimate the size first

Only when diagram stated as accurate