Carcass wrote:

In the figure above, if F is a point on the line that bisects angle ACD, and the measure of angle DCF is x°, which of the following is true of x ?
(A) 90 ≤ x < 100
(B) 100 ≤ x < 110
(C) 110 ≤ x < 120
(D) 120 ≤ x < 130
(E) 130 ≤ x < 140
F is a point on the line that bisects angle ACDWe're told that ∠ACD = 90°
So, if a line BISECTS ∠ACD, the two resulting angles are each
45°
Since 2 angles on a line add to 180°...

...we can write: x +
45° = 180°
Solve: x = 135°
Answer: E
Cheers,
Brent