L.11.1 Lines that intersect circles

By Norma Jeanete Morales Navas.

​Lines that Intersect Circles

The interior of a circle is the

set of all points inside the circle.

The exterior of a circle is the set of all points outside the circle.

Interior vs Exterior

Multiple Select

Which parts are chords? Choose more than one

• EF

• Line l

• AC

• BC

Multiple Choice

Which parts is the tangent ?

• EF

• Line l

• AC

• BC

Multiple Choice

Which parts is the secant?

• EF

• Line l

• AC

• BC

Multiple Choice

Which parts is the point of tangency?

• B

• C

• A

• F

Multiple Choice

Which parts is the diameter?

• AB

• AC

• BC

• EF

Parts of Circles

Congruent Circles

Two circles are congruent circles if and only if they have congruent radii.

Parts of Circles

Concentric Circles

Concentric circles are coplanar circles with the

same center.

Multiple Choice

What is BH called?

• Chord

• Secant

• Tangent

• Diameter

Parts of Circles

Tangent Circles

Two coplanar circles that intersect at exactly one point are called tangent circles .

Draw

Draw two Tangent Circles

Multiple Choice

Name a Diameter.

• DE

• GA

• CB

• AB

Word Cloud

What does concentric mean?

Multiple Choice

Name a secant of the circle.

• $$\overline{BA}$$

• $$\overline{FG}$$

• $$\overline{GE}$$

• $$\overline{CH}$$

Multiple Choice

Name a chord of the circle.

• $$\overline{BA}$$

• $$\overline{HC}$$

• $$\overline{GE}$$

• $$\overline{DA}$$

A common tangent is ...

A line that is tangent to two circles

Problem Solving Application

The summit of Mount Everest is approximately 29,000 ft above sea level. What is the distance from the summit to the horizon to the nearest mile?