The measure of ∠ADE is 30° + 90° = 120 degrees.22 . D
If is the midpoint of and C(x, y), then 6 is the
average of and x, and is the average of 4 and y :and:23 . C
Simplify the equation:Don’t jump to the conclusion that if 9 equals x^2 , then x must be 3. x could
just as well be –3: