Question

two angle of a triangle are 40 degree and 90 degree find the third angle? ​

Answer 1

Answer:

50

Step-by-step explanation:

sum of all angles is 180

180=x+40+90

180=x+130

180-130=x

50=x

Answer 2

Given,

The measure of two angles of a triangle is 40° and 90°.

To Find,

The third angle of the triangle.

Solution,

By using the angle sum property of a triangle which states that the sum of all angles of a triangle is equal to 180°.

Let the third angle of the triangle be x.

So,

40+90+x = 180

130+x = 180

x = 180-150

x = 30°

Hence, the third angle of the triangle is 30°.