# Angles about a Point

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.

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