______ lines are line that cross or meet each other at a point.

If points which are not on the same line are called 

If l||m.  Then find x  and y.

A circle is made up of

_______ lines  intersect each other  at right angle.

In figure of .  Find 

The angle measure of a straight line is

When two lines intersect each other, one of the angle measure is 110^o, then what is the measure of opposite angle ?

If three or more points are on the same line we say that these points are 

The angle that the arms include between each other, say at 10’o clock is