Question

If two angles of triangle are 30degree and 40degree then find the measure of the third angle of the triangle
please solve this question of anyone give this answer I'll brainlist​

Answer 1

Answer:

110 degree

Step-by-step explanation:

Let unknown angle be x.

Given: 30degree, 40degree

To find: x

30 + 40 + x = 180 (Angle sum property of triangle)

70 + x = 180 (Adding terms in the LHS)

x = 180 - 70 (Transposing 70 to RHS)

x = 110 degree

Ans) x is 110 degree

Answer 2

The third angle will be:- 110°

Step-by-step explanation:

PROOF:-

Let the third angle be:- x°

then,

30°+ 40°+x° :- 180°

(sum of interior angles of triangle:- 180°)

70°+x° :- 180°

x° :- 180°- 70°

x°= 110°.