What is the name of the triangle whose all the three sides are unequal?

If the three angles of a triangle measure $40°, 50°, 90°$, the triangle is _____.

Choose the quadrilateral in which all the four sides are not equal.

The number of right angles when hour hand goes from $5$ to $11$ is _____.

Which solid has the least number of faces?

Football is like a shape of a _____.

The faces of a triangular pyramid are all _____.

Two right angles are _____ part of a revolution.