Lines and Angle...

The angle formed by the pages of an open book is:

The measure of an angle is three times the measure of its complement. The angles are:

When the clock shows time $$5:20$$, the angle formed between the two hands is

If the angles of a triangle are in the ratio $$2:3:4$$, find the three angles.

If one angle of a triangle is equal to the sum of the other two angles, then the triangle is:

In fig, then $$\angle A+\angle B+\angle C+\angle D+\angle E+\angle F=$$

Complementary angle of $$72\displaystyle \frac{1}{2}^{\circ}$$ is:

In the given figure, value of $$x$$ is .........

A reflex angle is .........a straight angle.

The measure of angle $$y$$ in the given figure is ......... .