A) corresponding angle theorem
The answer is 13, i got this by using the pythagorean theorem. a^2 + b^2 = c^2. in this case it would be 84^2 + b^2 = 85^2. then that would turn into 7056 + b^2 = 7225, subtract both sides by 7056 to get b^2 = 169, then square 169 to get 13 :)
Answer:
-1
Step-by-step explanation:
Irregular hexagons (Meaning 6 sides, irregular is optional) and quadrilaterals.
A and D... i think but i would rather go with A and C
