Tangents & Chords Explained

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In the intersecting chords example, if AE = 3 cm, EB = 4 cm, and CE = 2 cm, what is the length of ED?

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ED is 6 cm.

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Example Problems on Intersecting Chords

In the intersecting chords example, if AE = 3 cm, EB = 4 cm, and CE = 2 cm, what is the length of ED?

ED is 6 cm.

Definition of Intersecting Chords

What are intersecting chords?

Intersecting chords are two chords that cross each other inside the circle.

Example Problems on Tangents

In the tangent length example, what is the distance from point P to the center O of the circle if the radius is 6 cm and the tangent lengths are 10 cm each?

The distance OP is approximately 11.66 cm.

Applications of Intersecting Chords Theorem

How can the intersecting chords theorem be applied?

It can be used to find unknown lengths of segments when given certain lengths.

Applications of Tangent Properties

How can tangent properties be applied in circle geometry problems?

Tangent properties can be applied to solve problems involving angles and lengths in circle geometry.

Definition of Tangent

What is a tangent in relation to a circle?

A tangent is a line that touches a circle at exactly one point.

Intersecting Chords Theorem

What does the Intersecting Chords Theorem state?

If two chords intersect each other inside a circle, the products of the lengths of the segments of each chord are equal.

Formula for Intersecting Chords

What is the formula to find the length of the tangent from a point to a circle?

Use the Pythagorean theorem: OP^2 = OA^2 + AP^2.

Tangent Properties

What is the property of a tangent in relation to the radius at the point of contact?

A tangent to a circle is perpendicular to the radius drawn to the point of contact.

Equal Lengths of Tangents from External Point

What can be said about the lengths of two tangents drawn from an external point to a circle?

The tangents are equal in length.

Formula for Intersecting Chords

What is the formula for the Intersecting Chords Theorem?

If chords AB and CD intersect at point E, then AE × EB = CE × ED.

Formula for Intersecting Chords

What is the formula for the intersecting chords when AE = 5 cm, EB = 3 cm, and CE = 4 cm?

Use AE × EB = CE × ED to find ED.

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