1.) We know that the angles A and C are congruent because they are across from each other.
Then to find angles B and D we first add angles A and C to subtract the total from 360° (this is what all our angles should add up to)
360-150= 210°
so our last two angles must be equal and must add up to 210°
210/2= 105°
A. 75°
B. 105°
C. 75°
D. 105°
Then we use the same concepts to find number two.
104+104=208
360-208= 152
152/2= 76°
A. 76°
B. 104°
C. 76°
D. 104°
