Students learn how to work out missing angles in a triangle.
As learning progresses they combine angles in a triangle with angles about a point and on a straight line.
Differentiated Learning Objectives
- All students should be able to calculate angles in a scalene triangle.
- Most students should be able to calculate angles in an isosceles triangle and combine other angle properties.
- Some students should be able to prove angles in a triangle have a sum of 180°.