Angle facts

The angle rules you need for KS3 and GCSE: straight lines, triangles, parallel lines and polygons.

Questions

What do angles on a straight line add up to?
What do angles around a point add up to?
What do the interior angles of a triangle add up to?
What do the interior angles of a quadrilateral add up to?
Alternate angles on parallel lines are...
Co-interior angles on parallel lines...
Vertically opposite angles are...
What do the exterior angles of any polygon add up to?
What is the size of each interior angle of a regular hexagon?
Two angles in a triangle are 50° and 70°. What is the third angle?