Angles formed by Chords, Secants, and Tangents

For FREE access to this lesson, select your course from the categories below.

Students learn the following theorems related to chords, secants, and tangents. The measure of an angle formed by two chords that intersect inside a circle is equal to half the sum of the measures of the intercepted arcs. The measure of an angle formed by two secants drawn from a point outside a circle is equal to half the difference of the measures of the intercepted arcs. The measure of an angle formed by two tangents drawn from a point outside a circle is equal to half the difference of the measures of the intercepted arcs. The measure of an angle formed by a secant and a tangent drawn from a point outside a circle is equal to half the difference of the measures of the intercepted arcs. Students are then asked to find the missing measures of arcs and angles in given circles using these theorems.
We help you determine the exact lessons you need.
We provide you thorough instruction of every step.
We`re by your side as you try problems yourself.
We test your knowledge until you`ve got it down.
We build your foundation if you`re struggling.
Login to your account
Enter your information to sign in
Lesson limit reached

The learning doesn't have to stop!

Become a MathHelp.com member today and receive unlimited access to lessons, grade reports, practice tests, and more!

Become a member

Already a member?

The learning doesn't have to stop!

Become a MathHelp.com member today and receive unlimited access to lessons, grade reports, reviews and more!

Become a member
Select your category
Test Prep
K12
College
Cancel
Which test are you preparing for?
Cancel
Select your course
Cancel
Select your course
Cancel
Select your test
Select your course

*"Tutoring" recommended for classroom students

Cancel
Which college are you attending?
Cancel