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valina [46]
3 years ago
9

What is the value of y?

Mathematics
1 answer:
Aleksandr [31]3 years ago
8 0

We have an isosceles triangle with one angle 54 degrees and the other angles both labeled y degrees.


Triangle angles add to 180 degrees.


54 + y + y = 180


54 + 2y = 180


2y = 180 - 54 = 126


y = 126/2 = 63 degrees


Answer: 63 degrees


Check: 63+63+54=180 good



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