Question

two angles of a triangle are 45 degree and 75 degree find the third angle​

Answer 1

let 3 rd angle = X

Frist angle = 45°

second angle = 75°

X+45°+75° = 180° ( sum of all angle in triangle)

X + 120° = 180°

X = 180° - 120°

X= 60°

hence, third angle of triangle is 60 °

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Answer 2

hey mate☺

angle1+angle3+angle3=180° 【angle sum property of a triangle】

angle1=45°

angle2=75°

45°+75°+angle3=180°

120°+angle3=180°

angle3=180°-120°

angle3=60°

third angle is 60°

hope it helping you ☺✌✌