Numerical Practice With Big Circles

                     Lesson 1

Problem:   Find measure of all the arcs. They are in ratio

m arc EY : m arc YT : m arc TR : m arc RE = 7 : 5 : 4 : 2

Solution    Find measure of arcs: 7x + 5x + 4x + 2x = 360

Step 1:       

Solution    18x = 360 => x = 20

Step 2:

Solution    Arc EY = 140°, YT = 100°

Step 3:

Solution    Arc RT = 80°,RE = 40°

Step 4:          

                                                            Complete    

                                                           Try two practice problems:  

Do the following:

A.

Angle number-1

B.

Angle number-2

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