Question

if two angles of triangle are 30° 60° then measure of third angle is​

Answer 1

Answer:

Sum of angles of a triangle = 180

First angle = 30

Second angle = 60

Third angle = 180 - (60 + 30)

180 - 90

= 90 degree

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Answer 2

Answer:

the total of angles of triangle is 180°

if we can give name to third angle is x

then x°+30°+60°= 180°

x°+90°=180°

x°=180°-90°

x°=90°