Bunuel wrote:
In the figure above, what is r + s in terms of x?
(A) x
(B) 2x
(C) 90 – x
(D) 90 – 2x
(E) 180 – 2x
[Reveal] Spoiler:
The third angle in triangle that contains right angle and (90-x) is
180 - 90 -(90-x)
= x
r+s= x since exterior angle is equal to sum of interior opposite angles
Answer A
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