The angles of a triangle always sum to 180°
So:
110° - x + 3x - 10° + 2x = 180°
-x + 3x + 2x = 180° - 110° + 10°
4x = 80° Divide both sides with 4
x = 20°
First angle = 110° - 20° = 90°
Second angle =3 20° - 10° = 60° - 10° = 50°
Third angle = 2 20° = 40°
find the measures of the interior angles.. (triangle)
110-x , 3x-10, 2x
write equation too .
1 answer
1 answer