Post your question in the Comment section below, and we’ll answer it as fast as humanly possible.

- Video Course
- Video Course Overview - READ FIRST
- General GRE Info and Strategies - 7 videos (all free)
- Quantitative Comparison - 7 videos (all free)
- Arithmetic - 42 videos (some free)
- Powers and Roots - 43 videos (some free)
- Algebra and Equation Solving - 78 videos (some free)
- Word Problems - 54 videos (some free)
- Geometry - 48 videos (some free)
- Integer Properties - 34 videos (some free)
- Statistics - 28 videos (some free)
- Counting - 27 videos (some free)
- Probability - 25 videos (some free)
- Data Interpretation - 24 videos (some free)
- Analytical Writing - 9 videos (all free)
- Sentence Equivalence - 39 videos (all free)
- Text Completion - 51 videos (some free)
- Reading Comprehension - 16 videos (some free)

- Study Guide
- Office Hours
- Extras
- Guarantees
- Prices

## Comment on

Lines and Angles## knowledgeble video

very nice

## At 1:40 in the video how do

## On the GRE, a line that

On the GRE, a line that appears to be straight can assumed to be straight. For more on what can and cannot be assumed with GRE Geometry diagrams, see this video: https://www.greenlighttestprep.com/module/gre-geometry/video/863

## Hey ! I really did not

## You're referring to this

You're referring to this question: http://greprepclub.com/forum/in-the-figure-above-if-what-is-the-value-of...

We're told that r/(r+s) = 5/8

On the diagram, we see that angle r and angle s both lie on the same line, which means they must add to 180 degrees. In other words, r+s = 180

So, we can take the given information, r/(r+s) = 5/8, and replace (r+s) with 180 to get: r/180 = 5/8

To solve this, we can first cross multiply the fractions.

We get: (8)(r) = (5)(180)

Or: 8r = 900

Divide both sides by 8 to get: r = 900/8 = 112.5

Does that help?

## Very easy to comprehend tanxs

## Thanks!

Thanks!

## Add a comment