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With B as centre, draw an arc of radius 4.5 cm
With C as centre, draw an arc of radius 6 cm and cut the previous arc
Mark the point of intersection of arcs as A. Join AB and AC. ΔABC is now ready
At Q, draw QX making 60
With Q as centre, draw an arc of radius 5 cm. It cuts QX at P.
Join AB. ΔPQR is now ready
At X, draw a ray XP making an angle of 30
At Y, draw a ray YQ making an angle of 100
The point of intersection of the two rays is Z.
ΔXYZ is now completed
At M, draw MX ⊥ MN.
With N as centre, draw an arc of radius 10 cm to cut MX at L
Join LN.
ΔLMN is now completed
