Use the given information to complete the proof of the following theorem. If a quadrilateral is a parallelogram, then its opposite sides are congruent.
By definition, a parallelogram is a quadrilateral in which both pairs of opposite sides are parallel.
Use this definition in your proof.

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180

if this is really you s much. i only have 3 points left and i have 2 questions to ask

cut 138 centimeters off

step-by-step explanation:

250-112 = 138

step-by-step explanation:

graph using a few selected

x         y

-1       15

0         6

1         2.4

2       0.96