SOLUTION: The second angle of a triangle is twice the first angle. The third angle is five more than four times the first angle. What is the measure of the second angle?
Is it 30 degrees?
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Is it 30 degrees?
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Question 301568: The second angle of a triangle is twice the first angle. The third angle is five more than four times the first angle. What is the measure of the second angle?
Is it 30 degrees? Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website! let the first angle be x
the second angle will be 2x
the third abgle = 4x+5
THE SUM OF ALL THE ANGLES OF A TRIANGLE = 180 DEG
x+2x+4x+5=180
7x+5=180
7x= 180-5
x=175/7
x= 25 the first angle
second angle = 2x = 50 deg
theird angle = 4x +5 = 4*25 +5=105 deg
