
The sum of all interior angles of a Heptagon is

Important Questions on Lines and Angles
If is a straight line then value of , in the given diagram will be





Consider the following statements when two straight lines intersect :
i) Adjacent angles are complementary.
ii) Adjacent angles are supplementary.
iii) Vertically opposite angles are equal.
iv) Vertically opposite angles are supplementary.



In the given figure, is an isosceles triangle with . If and , then the measure of the angle is

The rod of a TV disc antenna is fixed at right angles to the wall and a rod is supporting the disc as shown in the figure. If long and , find

If , find the value of





The angles of a quadrilateral are in the ratio . Find the measure of each angle.



The quadrilateral formed by angle bisectors of a cyclic quadrilateral is a

A quadrilateral has three acute angles, each measuring . Find the measure of the fourth angle.

In figure, if , show that .

