R. D. Sharma Solutions for Chapter: Basic Geometrical Concepts, Exercise 1: EXERCISE

Give three examples from your environment of curved surfaces.

Mark a point on a sheet of paper and draw a line passing through it. How many lines can you draw through this point?

Mark any two points $P$ and $Q$ in your notebook and draw a line passing through the points. How many lines can you draw passing through both the points?

Give an example of a horizontal plane and a vertical plane from your environment.

How many lines may pass through one given point, two given points, any three collinear points?

Mark three non-collinear points $A, B$ and $C$ in your notebook. Draw lines through these points taking two at a time. Name these lines. How many such different lines can be drawn?

An inkpot has both              surfaces.

Two lines in a plane are either                or are                 .