3 years ago

For this figure, what is the value of x?

2 answers:

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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