Problem 1720. Do the lines intersect?

Created by Ned Gulley

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328 Solutions
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Last Solution submitted on Jan 15, 2021

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4 Comments

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Celestino on 11 Mar 2014

What about
a = [0,0; 2,2]; b = [1,1; 3,3];
?

Ned Gulley on 12 Mar 2014

Hi Celestino. I added a little bit more clarifying text to the problem statement. That's an interesting test case, but not one I will use for this problem. You could make your own extension to this problem, though!

Doddy Kastanya on 26 Dec 2020

Test Case 4 should be "true" since these lines intersect.

For Test Case 3, the two lines are on top of each other, so they will technically intersect infinite times :).

Dyuman Joshi on 20 Feb 2021 at 10:05

@Doddy
The question asks if the "line segments" intersect or not, not the whole line. For lines touching, it is clearly stated in the problem statement, that the line segments should not be overlapping and should intersect only at a single point.

Solution Comments

Solution 659287

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1 Comment

Andrew Newell on 14 May 2017

I like the conceptual clarity of this one.

Solution 416465

1 Comment

1 Comment

Celestino on 11 Mar 2014

For
a = [0,0; 2,2]; b = [1,1; 3,3];
a = [0,0; 2,2]; b = [2,2; 3,3];

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geometry intersection

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Problem 1720. Do the lines intersect?

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Problem 1720. Do the lines intersect?

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