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Lesson 1 Properties of Tangents to a Circle.notebook February 01, 2015
OutcomesShape & Space (Unit 1, 7/8)
Measurement
1. Solve problems and jusfy the soluon strategy, using the following circle properes:
• 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.
Review of Pythagorean TheoreumRemember your types of Triangles?
Lesson 1 Properties of Tangents to a Circle.notebook February 01, 2015
Remember from Before...
Similar Triangles
*All angles are the same
Angles in a Triangle
*All angles have to add to 180
Practice Your Skills
Complete the Triangles
Definitions
Radius the length of a line segment from its center to its perimeter
Congruent Lines that are the same length
Parallel Lines two lines that do not meet
Perpendicular Lines two lines that do meet
Lesson 1 Properties of Tangents to a Circle.notebook February 01, 2015
Lesson 1 Properties of Tangents to a Circle.notebook February 01, 2015
Practice Your Skills!
Stage 1: 3, 5, 8, 12
Stage 2: 4, 6, 9, 11, 14