In the accompanying diagram of parallelogram ABCD, angle A =2x-10 and angle B =5x+15. Find x.
1 answer:
Answer:
x = 25
Step-by-step explanation:
Mathematically, one of the properties of a parallelogram is that consecutive angles of a parallelogram are supplementary
What this means is that they add up to be 180
A and B are supplementary, and this means that their addition equals 180
Thus, adding A and B equals 180
2x -10 + 5x + 15 = 180
7x + 5= 180
7x = 180-5
7x = 175
x = 175/7
x = 25
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