By the end of this unit, you will be able to:

*SCO 1 Solve problems and justify the solution strategy, using the f**ollowing circle properties: the perpendicular from the centre of a circle to a chord bisects the chord; the measure of the central angle is equal to twice the measure of the inscribed angle subtended by the same arc; the inscribed angles subtended by the same arc are congruent; a tangent to a circle is perpendicular to the radius at the point of tangency.*1.1 Demonstrate that the perpendicular from the centre of a circle to a chord bisects the chord; the measure of the central angle is equal to twice the measure of the inscribed angle subtended by the same arc; the inscribed angles subtended by the same arc are congruent; a tangent to a circle is perpendicular to the radius at the point of tangency.

1.2 Solve a given problem involving application of one or more of the circle properties.

1.3 Determine the measure of a given angle inscribed in a semicircle, using the circle properties.

1.4 Explain the relationship among the centre of a circle, a chord, and the perpendicular bisector of the chord.