Question

Construct the circumcentre of the $\Delta ABC$ with AB = 5 cm, $\angle A={70}^o$ and $\angle B={60}^o$. Also draw the circumcircle and find the circumradius of the $\Delta ABC$.

Answer 1

Step 1: Draw the $\Delta ABC$ with the given measurements.
Step 2: Construct the perpendicular bisectors of any two sides (AC and BC) and let them meet at S which is the circumcentre.
Step 3: With S as centre and SA = SB = SC as radius draw the circumcircle to pass through A, B and C. Circumradius = 3. 2cm.