1. Radial differentiation slide
Self differentiation
Radial differentiation slide

2. How do you find Angles in a Polygon ?
For a square, pentagon, hexagon, heptagon, octagon, table the sum of interior angles in a list. Describe what you have seen.
different starting points.
How do you measure or draw angles?
When you look at the sum of interior angles of different polygons can you see a pattern?
What are the sum of Angles in triangles & Quadrilaterals
You Choose
What is the connection between the number of sides of a polygon and sum of angles?
How about a regular decagon?
Draw a Pentagon measure angles, add them up. Repeat for a hexagon.
Which is the most efficient method of finding the sum of angles in a polygon?
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3. Learning Journey Angles in a Polygon
Which is the most efficient method of finding the sum of angles in a polygon?
Compare and discriminate between ideas
Why might this be useful?
What connection between sides and sum of angles?
Predict, draw conclusions
What will the sum of the angles in a 7 sided shape be? An 8 sided? Can you work out for a ten sided? Etc?
How about a regular decagon?
Seeing patterns
Can you see a pattern in what you have done?
Put sum of interior angles in a list.
Describe what you have seen.
Use information
Grasp meaning
Draw a Pentagon measure angles, add them up.
Repeat for a hexagon.
Observation and recall of information
Regular?
Angles in triangles & Quadrilaterals
How to measure angles.