Construct a scalene triangle ABC, given AB=3 cm, AC=5 cm and BC=4 cm.
Step 1: Draw the base as AC=5cm. Step 2: Take 3cm on the compass and cut an arc from A.
Step 3: Take 4cm on the compass and cut an arc from C which intersects the previous arc at B.
Step 4: Join AB and AC. We get △ABC