Draw two lines on a paper as shown below. Do they intersect each other? Can you call them parallel lines? Give reason.

Draw any two separate lines in a plane. Do they intersect at more than one point?

(i) Is quadrilateral EFGH a convex quadrilateral? (ii) Is quadrilateral TUVW a concave quadrilateral? (iii) Draw both the diagonals for quadrilateral EFGH. Do they intersect each other? (iv) Draw both the diagonals for quadrilateral TUVW. Do they intersect each other?

Draw a circle and a secant PQ of the circle on a paper as shown below. Draw various lines parallel to the secant on both sides of it . What happens to the length of chord coming closer to the centre of the circle ?

How can you compare two line segments?

If two lines intersect each other then the number of common points they have

When a traversal intersects two lines and a pair of alternate co exterior angles are eqaul what can you say about the two lines?

Draw two lines bar(AB) and bar(CD) such that they intersect at point 'O' .Trace the figure given below on a tracing papier. Place the traced figure over the figure given below and rotate it such that /_DOB coincides /_COA ,Observe the angles /_AOD and /_BOC also /_COA and /_DOB .You will notice that /_AOD=/_BOC and /_CDA=/_DOB

Assertion (A) : If 5 parallel lines intersect 4 parallel lines, then the number of parallelograms formed is 80 Reason (R) : The number of parallelograms formed when a set of m parallel lines are intersecting another set of n parallel lines is ""^(m)C_(2)xx""^(n)C_(2) The correct answer is