Given below are pairs of statements. Combine them using ‘if and only if' :
p: If two lines are parallel, then their slopes are equal. q: If the slopes of two lines are equal, then they are parallel.

Given below are pairs of statements. Combine them using ‘if and only if' : p: if Anil is intelligent, then he scores 92%. q : If Anil scores 92%. then he is intelligent.

Given below are two pairs of statements. Combine these two statements using if and only if : p: If a rectangle is a square, then all its four sides are equal. q : If all the four sides of a rectangle are equal, then the rectangle is a square.

Given below are two pairs of statements. Combine these two statements using if and only if : p : If the sum of digits of a number is divisible by 3, then the number is divisible by 3. q : If a number is divisible by 3, then the sum of its digits is divisible by 3.

In the given figures which of the following two lines are parallel and why?

Two lines parallel to the same line are ........... to each other.

If two parallel lines are cut by a transversal then corresponding angles are equal.

Two lines, which are both parallel to the same line, are parallel to each other, prove that.

Write the contrapositive and converse of the following statement:- If the two lines are parallel, then they do not intersect in the same plane.