sevaramirabell
01.02.2022 •
Mathematics
Help me out please!!
For what value of X must ABCD be a parallelogram?
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Ответ:
x = 3
Step-by-step explanation:
A parallelogram must have two pairs of parallel sides.
For this to be true, the alternate exterior angles of the diagonal must be congruent.
Hence the equation,
10x + 4 = 13x - 5
Simplify.
9 = 3x
x = 3
Ответ: