Learning Resources

Outcomes

In this lesson you will

• Discover the properties of a tangent and tangent segments drawn to a circle from an external point.

By the end of this section you should be able to:

• Apply inductive reasoning to make conjectures in geometric situations.
• Investigate, and make and prove conjectures associated with angle relationships in circles.
• Write proofs using various axiomatic systems and assess the validity of deductive arguments.
• Investigate, and make and prove conjectures associated with tangent properties of circles.
• Apply properties of circles
• Solve problems involving the equations and characteristics of circles and ellipses.
• Develop and apply formulas for distance and midpoint.

Prerequisites

To be successful in this lesson, it would be helpful to know the following:

• How to measure angles with a protractor.
• The angle and arc relationships developed so far in this unit.
• The properties of an isosceles triangle.
• That the sum of the interior angles of a triangle is 180°.