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7 months ago

Find the measure of angle b

Mathematics

2 answers:

olga2289 [7]7 months ago

7 0

Answer:

b = 65 degrees

Step-by-step explanation:

As we can see, the line that angle b and 115 deg correspond to is a straight line. A straight line always measures at 180 deg.

Because of this principle, we know that:

$115+ b = 180$

We can simplify this one variable equation now:

$b=180-115\\$

Now solve:

$b=65$

And this makes sense. Just by eyeballing the angle, we can see that it is under 90 degrees.

So, b = 65 degrees

garik1379 [7]7 months ago

3 0

Answer:

Step-by-step explanation:

angles are on a straight line = sum of 180°, to find the value of "b" subtract the known angle (115°) from 180°

180 - 115 = 65°

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