The sum of the angles in a triangle is always 180°.
Therefore, the missing angle can be found by subtracting the sum of the other two angles from 180°.
Missing angle = 180° - (56° + 43°)
Missing angle = 180° - 99°
Missing angle = 81°
Therefore, the missing angle is 81°.
What is th measure of the missing angle of a triangle where the other two angles are 56° and 43°?
1 answer