Question

Draw an angle ABC of measure 80and make a copy of it using a ruler and compass.​

Answer 1

Step-by-step explanation:

Steps of construction :

(i) Construct an angle ABC=80

∘

.

(ii) Take a line | and mark a point D on it.

(iii) Fix the compass pointer on B and

draw an arc which cuts the sides of ∠ABC at D and E.

(iv) Without changing the compass setting,

place the pointer on P and draw an arc which cuts | at Q.

(v) Open the compass equal to length DE.

(vi) Without disturbing the radius on the compass,

place its pointer at Q and draw an arc which cuts the previous arc at R.

(vii) Join PR and draw ray PR.

Its gives ∠RPQ which is the required angle

whose measure is equal to the measure of ∠ABC.

solution