Answer:
The measure of third angle of the triangle is 65°
Step-by-step explanation:
Measure of one angle of the triangle is given to be 42
Measure of second angle of the triangle is given to be 73
Let the measure of the third angle of the triangle be x
Now, By using the angles sum property of a triangle, We have :
Sum of all the three angles of a triangle is always supplementary
⇒ ∠1 + ∠2 + ∠3 = 180°
⇒ 42° + 73° + ∠3 = 180°
⇒ 115° + ∠3 = 180°
⇒ ∠3 = 180° - 115°
⇒ ∠3 = 65°
Hence, The measure of third angle of the triangle is 65°
