Example. Denote the real number on the line. Saturday

Represent the real number sqrt13 on the number line.

Represent the real number sqrt10 on the number line.

Represent the real number sqrt7 on the number line.

Represent the following real numbers on the number line. (If necessary make a seperate number line for each number). (-9)/(10)

Represent the following real numbers on the number line. (If necessary make a seperate number line for each number). sqrt5

Represent the following real numbers on the number line. (If necessary make a seperate number line for each number). (3)/(4)

Represent the following real numbers on the number line. (If necessary make a seperate number line for each number). (27)/(3)

Represent the following real numbers on the number line. (If necessary make a seperate number line for each number). -sqrt16

In between and two real numbers on the number line

Consider 8 vertices of a regular octagon and its centre. If T denotes the number of triangles and S denotes the number of straight lines that can be formed with these 9 points then the val of (T - S) =