Question

The measures of two angles of a triangle are 72 0 and 580 . Find the measure of the third angle. Name the property used here.

Answer 1

Answer:

50°, Angle sum property of a triangle is used here

Step-by-step explanation:

given,

∠1 = 72°, ∠2 = 58°

to find,

∠3

solution:

∠1 + ∠2 + ∠3 = 180° ( Angle sum property of a triangle )

therefore,

72° + 58° + ∠3 = 180°

130° + ∠3         = 180°

         ∠3          = 180° - 130° = 50°