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

State whether the following statement is True or False and justify your answer:
Euclid's fourth axiom states that things which coincide with one another are equal to one another.

In ancient India,the shapes of altars used for household rituals were:

Write whether the following statement is True or False. Justify your answer.
If a quantity $B$ is a part of another quantity $A$,then $A$ can be written as the sum of $B$ and some third quantity $C$.

Write whether the following statement is True or False. Justify your answer.
Two distinct intersecting lines cannot be parallel to the same line.

Boundaries of surfaces are: