Quiz and Interior Angles of Circles

Jenni McIntire and Teresa Davis


 

 


This lab is to explore angle measures of angles inside a circle


Investigation:
In Sketchpad,, make the following construction.

Do you see a relationship between these measures? What if we measure the vertical angle FGD and its intercepted arc FD?

 measure of angle CGE = __________

 measure of arc CE = __________

 measure of angle FGD= __________

 measure of arc FD= __________

Try adding, subtracting, multiplying and dividing the angles together and the arcs together to find a relationship.

Write your discovery without using angle FGD

Write a formula for finding the measure of an interior angle in a circle in relationship to the intercepted arcs.

Interior Angle = _____________________


Return