Find the measure of each angle indicated in each figure where l and m are parallel lines intersected by transversal n.

Find the measure of angle ‘a’ in each figure. Give reason in each case .

Find the measure of the question marked angle in the given figure

Write the component statements of each of the folloing compound statements : Two coplanar lines are parallel or they intersect at a point .

l, m and n are three parallel lines intersected by the transversals p and q at A, B, C and D,E, F such that they make equal intercepts AB and BC on the transversal p. Show that the intercepts DE and EF on q are also equal.

Find the angle between the tangents drawn to y^2=4x , where it is intersected by the line y=x-1.

The perpendicular bisector of the three sides of a right - angled triangle intersect each other

In each of the following compound statements state with reasons whether an "inclusive or" or an "exclusive or" is used : Two coplanar straight lines intersect at a point or they are parallel .

If m parallel lines in a plane are intersected by a family of n parallel lines, the number of parallelograms that can be formed is a. 1/4m n(m-1)(n-1) b. 1/4m n(m-1) c. 1/4m^2n^2 d. none of these

Two circle intersect each other at A and B and a straight line parallel to AB intersects the circles at C,D,E,F. Prove that CD = EF.