Ram and Ravi have the same weight. If they each gain weight by $2\, kg$,how will their new weights be compared?

State whether the following statement is true or false:
There are an infinite number of lines which pass through two distinct points.

Boundaries of surfaces are:

Give a definition for the radius of a circle. Are there other terms that need to be defined first? What are they,and how might you define them?

Solve the following question using an appropriate Euclid's axiom:
In the figure,we have $AB = BC$ and $BX = BY$. Show that $AX = CY$.

Read the following statement:
"$A$ square is a polygon made up of four line segments,out of which,length of three line segments are equal to the length of fourth one and all its angles are right angles".
Define the terms used in this definition which you feel necessary. Are there any undefined terms in this? Can you justify that all angles and sides of a square are equal?