3 years ago

Find the value of x.

Mathematics

2 answers:

avanturin [10]3 years ago

6 0

Answer:

57 degrees

Step-by-step explanation

trasher [3.6K]3 years ago

3 0

Answer:

x = 57

Step-by-step explanation:

So we know all triangles add up to 180 degrees. And that supplementary angles add up to 180 degrees.

So, we can do that missing angle + 138 = 180

180 - 138 = 42

180 - 42 - 81 = x = 57

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