Polygon Sum Conjecture

1. Draw a triangle. Use a protractor to measure each angle. Find the sum of all the angles.
2. Draw a quadrilateral. Use a protractor to measure each angle. Find the sum of all the angles.
3. Draw a pentagon. Use a protractor to measure each angle. Find the sum of all the angles.
4. Draw a hexagon. Use a protractor to measure each angle. Find the sum of all the angles.
5. Draw a heptagon. Use a protractor to measure each angle. Find the sum of all the angles.
6. Draw an octagon. Use a protractor to measure each angle. Find the sum of all the angles.

Complete the following chart:

# of sides: 3 4 5 6 7 8 n

# of triangles formed:

Sum of all the angles: