Question

.
Q12. Is it possible to construct a triangle whose angles are 30°, 40° and 90°? Explain​

Answer 1

Answer:

No

Explanation:

The sum of all the angles in a triangle must be 180 degrees. According to your question, the sum of the angles that is coming to be 160 degrees.

Answer 2

criterion of construction of triangle:-

1. sum of Two sides are more than the length of third sides

2.sum of three angles of triangle equals to 180°

Here Given:-

three angles of the triangle =30°,40° and 90°

no it is impossible to construct a triangle whose three angles are 30°,40° and 90°

because sum of them =30°+40°+90°

=160°

but as the criterion sum of three angles of triangle=180°

but it is not 180° here it is 160°