Draw a triangle ABC, where AB = 8 cm, BC = 6 cm and ㄥB = 70⁰ and locate its circumcentre and draw the circumcircle.

Construct the right triangle PQR whose perpendicular sides are 4.5 cm and 6 cm. Also locate its circumcentre and draw the circumcircle.

Construct ΔABC with AB = 5 cm ㄥB = 100⁰ and BC = 6 cm. Also locate its circumcentre draw circumcircle.

Construct an isosceles triangle PQR where PQ =  PR and ㄥQ = 50⁰, QR = 7cm. Also draw its circumcircle.

The angles of a triangle are in the ratio 1: 2 : 3, find the measure of each angle of the triangle.

ΔABC and ΔDEF are two triangles in which AB = DF, ∠ACB = 70°, ∠ABC = 60°, ∠DEF = 70° and ∠EDF = 60°. Prove that the triangles are congruent.

Find all the three angles of the ΔABC

Construct ΔPQR whose sides are PQ = 6 cm ㄥQ = 60⁰ and QR = 7 cm and locate its Orthocentre.

Draw ΔPQR with sides PQ = 7 cm, QR = 8 cm and PR = 5 cm and construct its Orthocentre.

Draw an equilateral triangle of sides 6.5 cm and locate its Orthocentre.