West Bengal Board Solutions for Chapter: Geometrical Concepts Based on Different Instruments of Geometry Box., Exercise 14: Let's Work out - 17.1

Using outer and inner scales of the protractor let's draw the angle $95°$.

By adding angle number $2$ and angle number $3$, the angle that is formed is named from the figure.

The angle formed by adding angle number $1$, number $2$ and angle number $3$, is named from the figure and Let's express it as the sum of three angles.

Let's name one acute angle.

Let's name one obtuse angle from the figure.

Let's name one right angle from the figure.

Let's name one straight angle from the figure.

Let's name a reflex angle from the figure.