The sum of the measures of the angles in a triangle is always 180 degrees.
So, we can write the equation:
3x + 2x + 20 + 4x - 20 = 180
Combine like terms:
9x = 180
Divide both sides by 9:
x = 20
Therefore, the value of x is 20.
a triangle had one angle measuring 3x degrees. A second angle measures 2x+20 degrees and the third agle measures 4x-20 degrees. what is the value of x?
1 answer