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In triangle abc, the measure of angle b is 20 more than three times the measure of angle a. the measure of angle c is 55 more than the measure of angle a. find the measure of ea…
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In triangle abc, the measure of angle b is 20 more than three times the measure of angle a. the measure of angle c is 55 more than the measure of angle a. find the measure of ea…
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Feb 17, 2018
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In triangle abc, the measure of angle b is 20 more than three times the measure of angle
a. the measure of angle c is 55 more than the measure of angle
a. find the measure of each angle
Mathematics
high-school
Aoak
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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 :)
Hellfish
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Feb 23, 2018
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