Unit

#### Description:

Students discover that a line is tangent to a circle at a given point if it is perpendicular to the radius drawn to that point.Students construct tangents to a circle through a given point.Students prove that tangent segments from the same point are equal in length.Teacher and Student versions of full lesson from engageNY

#### Subjects:

• Mathematics > General
• Mathematics > Geometry

#### Keywords:

inscribed angles radii chords central circumscribed tangent

English

#### Access Privileges:

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#### Collections:

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Update Standards?

#### CCSS.Math.Practice.MP1: Common Core State Standards for Mathematics

Make sense of problems and persevere in solving them.

#### CCSS.Math.Practice.MP2: Common Core State Standards for Mathematics

Reason abstractly and quantitatively.

#### CCSS.Math.Practice.MP3: Common Core State Standards for Mathematics

Construct viable arguments and critique the reasoning of others.

#### CCSS.Math.Practice.MP5: Common Core State Standards for Mathematics

Use appropriate tools strategically.

#### CCSS.Math.Practice.MP6: Common Core State Standards for Mathematics

Attend to precision.

#### CCSS.Math.Practice.MP7: Common Core State Standards for Mathematics

Look for and make use of structure.

#### CCSS.Math.Content.HSG-C.A.2: Common Core State Standards for Mathematics

Identify and describe relationships among inscribed angles, radii, and chords.
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