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loris [4]
3 years ago
15

Point O is the incenter of ΔABC. What is mQBO? mQBO is ___ degrees.

Mathematics
2 answers:
natta225 [31]3 years ago
5 0
The answer is 12 degrees
Sever21 [200]3 years ago
4 0

Answer:

m\angle QBO=12

Step-by-step explanation:

We have been given that point O is the in-center of triangle ABC. We are asked to find the measure of angle QBO.

We know that in-center of a triangle is the point, where three angle bisectors of triangle meet.

Since O is in-center, so AO will be angle bisector. We will find the value of x by equating the expression for angle QAO to angle SAO as:

2x+6=4x-12

2x+6-6=4x-12-6

2x=4x-18

2x-4x=4x-4x-18

-2x=-18

\frac{-2x}{-2}=\frac{-18}{-2}

x=9

Now we will substitute x=9 in the expression for measure of angle QBO.

m\angle QBO=3x-15

m\angle QBO=3*9-15

m\angle QBO=27-15

m\angle QBO=12

Therefore, the measure of angle QBO is 12 degrees.

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