• #### The Circle - Problem 10

##### Math›Precalculus›Conic Sections
How to write the equation for a line that is tangent to a circle.
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• #### Parts of a Circle - Problem 1

##### Math›Geometry›Geometry Building Blocks
How to classify arcs and define chords and tangents.
• #### The Circle - Problem 11

##### Math›Precalculus›Conic Sections
How to transform a general form circle to standard form by completing the square.
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• #### The Circle - Problem 5

##### Math›Precalculus›Conic Sections
How to find the center and midpoint of a circle from the endpoints of the diameter.
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• #### Regions Between Circles and Squares - Problem 2

##### Math›Geometry›Area
How to calculate the area of a region formed by four quarter circles inside a square.
• #### Radii to Tangents - Problem 3

##### Math›Geometry›Circles
How to calculate the length of a segment drawn from the center of a circle to a point outside the circle, given the length of the tangent segment to that circle.
• #### The Circle - Problem 5

##### Math›Algebra 2›Conic Sections
How to find the center and midpoint of a circle from the endpoints of the diameter.
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• #### The Circle - Problem 11

##### Math›Algebra 2›Conic Sections
How to transform a general form circle to standard form by completing the square.
Tags:
• #### The Circle - Problem 10

##### Math›Algebra 2›Conic Sections
How to write the equation for a line that is tangent to a circle.
Tags:
• #### Similar Triangles in Circles and Right Triangles - Problem 1

##### Math›Geometry›Similarity
How to find missing side lengths of triangles in a circle.
• #### The Circle - Problem 7

##### Math›Algebra 2›Conic Sections
How to write the equation for a circle from the endpoints of the diameter.
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• #### The Circle - Problem 6

##### Math›Algebra 2›Conic Sections
How to write the equation of a circle from a given radius and center.
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• #### Parametrizing a Circle - Problem 2

##### Math›Precalculus›Vectors and Parametric Equations
How to find parametric equations of a circle centered at (3,4) with radius 5, oriented counter-clockwise.
• #### Similar Triangles in Circles and Right Triangles - Concept

##### Math›Geometry›Similarity
How to determine if two triangles in a circle are similar and how to prove that three similar triangles exist in a right triangle with an altitude.
• #### Area and Perimeter of Circles - Concept

##### Math›Pre-Algebra›Introductory Geometry
Vocabulary and formulas for the area of a circle
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• #### Area of Circles - Problem 3

##### Math›Geometry›Area
How to calculate the area in a problem where a rope or leash is tied to an object.
• #### Area and Perimeter of Circles - Problem 1

##### Math›Pre-Algebra›Introductory Geometry
Exact and decimal approximations for the area and circumference of circles
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• #### Regions Between Circles and Squares - Problem 1

##### Math›Geometry›Area
How to calculate the area of a region formed by four circles inside a square.
• #### Circle Tic Tac Toe Fun - Concept

##### Math›Algebra 2›Additional Topics
How to beat your teacher at circle tac tac toe.
• #### Area and Perimeter of Circles - Problem 2

##### Math›Pre-Algebra›Introductory Geometry
Area of composite shape involving circles in a real life problem
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