The main concept throughout the lesson is the sum of angles on a straight line being equal to 180° and those about a point have a sum of 360°. From this students go on to discover vertically opposite angles and angles about a point.
Differentiated Learning Objectives
- All students should understand that a straight line has a sum of 180 degrees.
- Most students should be able to calculate missing angles on a straight line.
- Some students should be able to calculating missing angles about a point.