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# Choose the correct answer from the given four options. For specifying a straight line, how many geometrical parameters should be known ?

$\begin {array} {1 1} (A)\;1 & \quad (B)\;2 \\ (C)\;4 & \quad (D)\;3 \end {array}$

Toolbox:
• To specify a straight line we need at least 2 geometrical parameters.
Step 1 :
We need to know at least 2 geometerical parameters to specify a straight line.
Hence 'B' is the correct answer.