Online College Courses for Credit

Sec. 3.1 Definitions for Chapter 3 Parallel Lines and Planes

Sec. 3.1 Definitions for Chapter 3 Parallel Lines and Planes

See More

Try Our College Algebra Course. For FREE.

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to many different colleges and universities.*

Begin Free Trial
No credit card required

29 Sophia partners guarantee credit transfer.

312 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 27 of Sophia’s online courses. Many different colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.


Sec. 3.1 Definitions from Chapter 3 Parallel Lines and Planes

Educreations lesson

Intersecting, Parallel, and Skew

This is a nice three dimensional demonstration of parallel and skew as well as intersecting lines.

Tarrou’s Chalk Talk – Alternate Interior Angles, etc.

This is the man we whose handwriting we love.

Directions for the quiz

Because of the limitations of the program, choice "a" is actually the question and b - e are your answer choices. You might have to look at other choices for the actual question, it should be obvious what the question is.