Question

7. Draw an equilateral triangle whose each side is 3.6 cm.​

Answer 1

Answer

Steps of construction :

Step 1 : Draw a line AB = 4.8cm .

Step 2 : Now , take radius of 3cm and center 'A' draw an arc. And take radius of 3.6cm and center 'B' draw an arc that intersect our previous arc at 'C'.

Step 3 : Join CA and CB we get required triangle ABC.

Now , we measure all internal angles and we get ∠ ABC is smallest angle ,

So, we bisect ∠ ABC .

Step 4: Take any radius (less than half of AB) and center 'B' draw an arc that intersect our line AB at P and line BC at Q.

Step 5 : With same radius and center 'P' and 'Q' draw arc which intersect at 'R'.

Step 6 : Join BR and extended BR that line intersects AC at 'D'.

Now , we can easily measure each other angle with the help of protractor.