Question

Construct the angle of $130{}^\circ $ using a protractor.

Answer 1

Hint: Angle of $130{}^\circ $is greater than $90{}^\circ $which means that $130{}^\circ $angle is obtuse angle.
Obtuse angle is a type of angle which is greater than $90{}^\circ $ but less than$180{}^\circ $.

Complete step-by-step answer:

The figure above shows the angle, ∠ABC equal to $130{}^\circ $ drawn using protractor.
I.A protractor is a D-shaped or half moon shaped device which is used to draw angles. Protractor is also used to measure the angles. In triangles or many other types of polygons, a protractor is used to measure the angles and categorize them into different categories. On the basis of measure of angle, angles can be acute (less than$90{}^\circ $), obtuse (more than $90{}^\circ $ but less than$180{}^\circ $) and right angle (equal to$90{}^\circ $).

II.To draw an angle of measure of$130{}^\circ $, first a line named AB is drawn which is the base of angle ABC equal to $130{}^\circ $.

III.At end point B of line AB, the middle point denoting line corresponding to angle, $90{}^\circ $is put. As angle measuring $130{}^\circ $is an obtuse angle, the number $130{}^\circ $which is on inner side of the left of $90{}^\circ $is seen to mark point corresponding to$130{}^\circ $. The point is marked as point C.

IV.Finally, point B is joined to point C through line AC leading in formation of angle, ∠ABC equal to$130{}^\circ $.
While using a protractor, it must be ensured that the line of base of the protractor must coincide with the base of the angle drawn or measured.

Note: As angle measuring $130{}^\circ $is an obtuse angle, the ray of angle drawn using protractor faces outward indicating angle of measure greater than$90{}^\circ $.