3 years ago

If two angles of a triangle have measures of 42° and 20°, what is the measure of the

Mathematics

2 answers:

PolarNik [594]3 years ago

5 0

Answer:

118

Step-by-step explanation:

We know,

Sum of all angles of triangle is 180 degree.

Let, the third angle be x,

or, 42 + 20 + x = 180

or, 62 + x = 180

or, x = 180 - 62 = 118

Therefore, the third angle is 118 degrees

iris [78.8K]3 years ago

4 0

Answer:

118°

Step-by-step explanation:

the angle measures of a triangle will always add up to 180

so..

42+20=62

180-62=118

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