EXPLANATION: 2 angles opposite from each other at the vortex are equal. You would set these equations equal to each other.
1. set them equal to each other. 1. (4x+7) = [5(x+l-4)]. 2. Distribute the 5 2. (4x+7) = (5x-20) 3. isolate the variable (add 20 to 7) 3. 4x + 27 = 5x 4. combine the x’s (subtract 4x from 5x) 4. 27 = x
Now, to be 100% sure of your answer, fill in the x’s.