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Page 1: What is a tangent? A tangent (Line AB) is a line that intersects the outside of the circle. The point of tangency (Point P) is where the line intersects
Page 2: What is a tangent? A tangent (Line AB) is a line that intersects the outside of the circle. The point of tangency (Point P) is where the line intersects

What is a tangent? A tangent (Line AB) is a line that intersects the outside of the circle.

The point of tangency (Point P) is where the line intersects the circle.

A

B

P

Page 3: What is a tangent? A tangent (Line AB) is a line that intersects the outside of the circle. The point of tangency (Point P) is where the line intersects

How many points of tangency can you

have from one point?

Page 4: What is a tangent? A tangent (Line AB) is a line that intersects the outside of the circle. The point of tangency (Point P) is where the line intersects
Page 5: What is a tangent? A tangent (Line AB) is a line that intersects the outside of the circle. The point of tangency (Point P) is where the line intersects

What is the tangent-radius

property? A tangent-radius property is:

The line formed between the centre of the circle, O, and the point of tangency, P, forms and 90 degree angle with the tangent line, AB.

A

B

P

O

Page 6: What is a tangent? A tangent (Line AB) is a line that intersects the outside of the circle. The point of tangency (Point P) is where the line intersects

Why is the Pythagorean Theorem so

important to us? What shape do we have now?

What is the length of C?

A

B

P

O

104

C

Page 7: What is a tangent? A tangent (Line AB) is a line that intersects the outside of the circle. The point of tangency (Point P) is where the line intersects

Circle Tangents

What is a tangent?

How is it formed?

What is the tangent-radius property?

How important is the Pythagorean Theorem?

What do the interior angles of every triangle add up to?

Page 8: What is a tangent? A tangent (Line AB) is a line that intersects the outside of the circle. The point of tangency (Point P) is where the line intersects

Circle Tangents

The interior angles of every triangle add up to 180 degrees.

REMEMBER:

An isoceles triangle has two equal sides and two equal angles.

An equilateral triangle has three equal sides and three equal angles

Page 9: What is a tangent? A tangent (Line AB) is a line that intersects the outside of the circle. The point of tangency (Point P) is where the line intersects

Assignment

Pg. 388

#3-9, 11-14,15a

Then 17, 19


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