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2 years ago

What is m angle ABC

Mathematics

2 answers:

victus00 [196]2 years ago

6 0

Answer:

3rd option: 60 degrees

Step-by-step explanation:

We can see in the diagram that the angle on C is a supplementary angle, which means that the sum of 135 and internal angle will be equal to 180 degrees.

Let x be the internal angle,

Then

x+135 = 180

x = 180-135

x = 45 degrees

So now we know that two interior angles of the triangle.

Also we know that sum of all internal angles of triangle is 180 degrees.

Using the same postulate:

A+B+C = 180

75 + B + 45 = 180

120+B = 180

B = 180 - 120

B = 60 degrees

So,

third option is the correct answer ..

just olya [345]2 years ago

6 0

Answer:

It’s 120 I got it right on the test !

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What is m angle ABC​

What is m angle ABC