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Whitepunk [10]
3 years ago
6

In triangle abc, the measure of angle b is 20 more than three times the measure of angle

Mathematics
1 answer:
sleet_krkn [62]3 years ago
5 0
Let x be the degree of angle a. 

Angle b: 20+3x
Angle c: 55+x 

We know that all angles add up to 180 degrees. 

180=x+(20+3x)+(55+x) 
180= 5x+75 
180-75=5x 
105/5=x
21=x 

Angle a: 21 degrees 
Angle b: 20+3(21) => 83 degrees 
Angle c: 21+55 => 76 degrees 

Hope I helped :) 
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