Given two distinct points,there is a ......... line that passes through them.

How many subsidiary triangles does a Sriyantra have?

In the Book of Elements $1$,how many definitions are given?

State whether the following statement is True or False. Justify your answer.
"For every line $l$ and for every point $P$ not lying on a given line $l$,there exists a unique line $m$ passing through $P$ and parallel to $l$." This is known as Playfair's axiom.

The three steps from solids to points are:

State whether the following statement is True or False. Justify your answer.
Attempts to prove Euclid's fifth postulate using the other postulates and axioms led to the discovery of several other geometries.