Write three un-defined terms of geometry

Which of the following needs a proof?

The number of interwoven isosceles triangles in Sriyantra is

Is the statement true or false? Give reasons.

Only one line can pass through a single point.

Boundaries of surfaces are

Euclid stated that 'all right angles are equal to each other', in the form of

The number of dimensions of a surface is

Boundaries of solids are

In the adjoining figure, name :

Six Points

In the following figure, if $\mathrm{A}\mathrm{C}=\mathrm{B}\mathrm{D},$ then prove that $\mathrm{A}\mathrm{B}=\mathrm{C}\mathrm{D}.$

Which of the following is a true statement?

The number of dimensions of a solid are

Euclid belongs to the country

A pyramid is a solid figure, whose base is

The side faces of a pyramid are