Which of the following figures lie on the same base and between the same parallels?
In such a cases, write the common base and the two parallels.

Which of the following is strongest base ?

Which of the following is the strongest base ?

Which of the following is strongest base?

Which of the following are purine bases-

Which of the following are base analogues?

In which of the following molecules, all the atoms lie in the same plane-

Draw two triangles ABC and DBC on the same base and between the same parallels as shown in the figure with P as the point of intersection of AC and BD. Draw CE || BA and BF || CD such that E and F lie on line AD. Can you show ar(DeltaPAB) = ar(DeltaPDC) Hint : These triangles are not congruent but have equal areas.

Which of the following are examples of the null set { y : y is a point common to any two parallel lines}