Who am I? 

I am a straight path with no end point. Who am I? 

Which from among the following colors is considered as an unemotional detached color?

Tangrams are a set of puzzle originated in which country

Only one circle can be drawn through three non collinear points.

The wheels of a car are of diameter $80 \mathrm{c}\mathrm{m}$ each. How many complete revolutions does each wheel make in 10 minutes when the car is traveling at a speed of $66 \mathrm{k}\mathrm{m}$ per hour? $\left(\mathrm{use} \pi =\frac{22}{7}\right)$

In the given figure, $AB\parallel CD, \angle ABO=40°$ and $\angle CDO=35°$. Then the value of $x$ will be

Mark three non-collinear points $\mathrm{A}, \mathrm{B}, \mathrm{C}$ as shown. Draw lines through these points taking two at a time. Name the lines. How many such different lines can be drawn?

In the given figure name four pairs of intersecting lines.

What do you mean by collinear points? How many lines can you draw passing through three collinear points?

A ray has definite length.

The length of a line is measurable.

The number of points on a line segment is finite.