How Do You Determine Whether a Line is Tangent to a Circle?

How Do You Determine Whether a Line is Tangent to a Circle?

Note:

In this tutorial, you'll see how the Converse of the Pythagorean Theorem is used to figure out if a line is tangent to a circle.

Keywords:

cirle

problem

line

tangent line

perpendicular

converse pythagorean theorem

pythagorean theorem

Background Tutorials

Determine and describe how changes in the linear dimensions of a shape affect its perimeter, area, surface area, or volume, including proportional and non-proportional dimensional change

Circles are a fundamental part of math! In this tutorial, you'll be introduced to circles and see the different parts of a circle such as the diameter, radius, and chord. Check out this tutorial to learn about circles!

Apply theorems about circles, including relationships among angles, radii, chords, tangents, and secants, to solve non-contextual problems

What does it mean when a line is tangent to a circle? In this tutorial, you'll learn what a line needs to do to be a tangent line to a circle.

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The converse of the Pythagorean Theorem is like the the Pythagorean Theorem in reverse. You can use it both forward and backward! Not all theorems work this way, but the Pythagorean Theorem does! This tutorial will show you how to use both the Pythagorean Theorem and its converse.