question_answer 1)

Draw \[\Delta PQR\] with PQ = 4 cm, QR = 3.5 cm and PR = 4 cm. What type of triangle is this?

Answer:

                Steps of construction 1. Draw a line segment QR of length 3.5 cm. 2. With Q as centre, draw an arc of radius 4 cm. 3. With R as centre, draw an arc of radius 4 cm. 4. Mark the point of intersection of arcs as P.                    5. Join PQ and PR.                                               \[\Delta PQR\]is now ready. \[\because \] \[PQ=PR\] \[\therefore \] \[\Delta PQR\] is isosceles.