l and m are two parallel lines intersected by another pair of parallel lines p and q . Show that `DeltaABC~= DeltaCDA`.

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.

If a set of m paralled lines intersect another set of n parallel lines (not parallelto the lines in the first set), then find the number of parallelograms fromed in this lattice structure.

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)(n-1) c. 1/4m^2n^2 d. none of these

If 5 parallel lines intersect another set of 4 , parallel lines (not parallel to the lines in the first set) then the no. of parallelograms formed in this lattice structure is:

The numbe rof parallelogram formed if 5 parallel lines intersect with 4 other parallel lines is:

The portion of a right circular cone intersected between two parallel planes is ……….

The number of parallelograms that can be formed from a set of four parallel lines intersecting another set of three parallel lines.