3 years ago

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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