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dolphi86 [110]
3 years ago
12

For this figure, what is the value of x?

Mathematics
2 answers:
Lelu [443]3 years ago
8 0
The sum of the interior angles of this triangle must be 180 degrees.

Adding them up:  [28]   +   [58 + 77]   +   [x] = 180

Solving for x:  28+ 135 + x = 180

                                        x = 180 - (28+35) = 117 (degrees)    (answer)
andrew11 [14]3 years ago
5 0
The angles inside a triangle always add up to 180 degrees.
The whole thing is one big triangle made of two smaller ones.

28 + 58 + 77 + x = 180
163 + x = 180
x = 180 - 163
x = 17
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