Step of construction:
Step 1: Draw a line segment BC = 5 cm
Step 2: Draw BX such that ∠ CBX = 40°
Step 3: Draw BY ⊥ BX.
Step 4: Draw the perpendicular bisector of BC intersecting BY at O and BC at M.
Step 5: With O as centre and OB as radius, draw the circle.
Step 6: With M as centre, draw an arc of radius 6 cm meeting the circle at A and at A’
Step 7: Complete the Δ ABC which is the required triangle.
Step 8: Produce CB to CZ.
Step 9: Draw AE ⊥ CZ.
Step 10: Length of the altitude AE is 5cm.
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