Construct a triangle accurately using the following steps;

1. i) Draw a line and mark a point P on it.
2. ii) On the line ,mark off a point Q ,2.5 cm from P, using a pair of compasses
3. iii) With P as the centre and radius 5cm,draw an arc
4. iv) With Q as the centre and radius 3.5, Draw another arc to intersect the arc in (iii) at R
5. v) Join P to R, and Q to R.PQR is the required triangle.