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BasketballEinstein

The answer is 125° = x because the exterior angle is 55°, from adding up all the exterior angles to ensure they add up to 360°. Then, you would have to use the Supplementary Angeles Theorem to find the obtuse measure beside that 55° exterior angle: 55 + m<x = 180. This is how you get 125° = m<x. You understand?

MathPhys

Answer:

B

Step-by-step explanation:

Two pairs of consecutive sides are congruent, so it can't be C.

At least one pair of opposite sides are parallel, so it can't be A.

The quadrilateral can't be inscribed in a circle, so it can't be D.

Therefore, the quadrilateral is a rhombus.  Answer B.

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