How to make a triangle of isoscles

Dear Student
Step 1: Draw a straight line QR  say 5 cm long.
Step 2: Using a protractor draw an angle of 60° from Point Q
Step 3: Using a protractor draw an angle of 60° from Point R.
Step 4: Mark the point where the two lines meet as P.
ΔPQR is the required isosceles triangle.

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