What We Have Discussed

A geometrical construction is the process of drawing geometrical figures using only two instruments - an ungraduated ruler and a compass.

Construction of geometrical figures of the following with justifications (Logical proofs):

• Perpendicular bisector of a given line segment. • Bisector of a given angle. • Construction of 60° angle at the initial point of a given ray.

To construct a triangle, given its base, a base angle and the sum of other two sides.

To construct a triangle given its base, a base angle and the difference of the other two sides.

To construct a triangle, given its perimeter and its two base angle.

To construct a circle segment given a chord and an angle.