by Michelle1
(Bradenton,fl)
If one angle is 57 degrees and the second is 2 times the third, what are the three angles?
The sum of the angles in a triangle is equal to 180.
Let 57 be the first angle
Let y be the second angle
Let z be the third angle
57 + y + z = 180
The second is 2 times the third or y = 2z
57 + 2z + z = 180
57 + 3z = 180
57 - 57 + 3z = 180 - 57
3z = 123
z = 123/3
z = 41
Jan 12, 22 07:48 AM
This lesson will show you how to construct parallel lines with easy to follow steps