# Measuring length and angle on slanted surfaces

**URL:** <https://discourse.mcneel.com/t/measuring-length-and-angle-on-slanted-surfaces/152441>\
**Category:** Rhino for Windows\
**Tags:** windows\
**Created:** [December 22, 2022, 7:58am UTC](https://discourse.mcneel.com/t/measuring-length-and-angle-on-slanted-surfaces/152441 "2022-12-22T07:58:08Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![In\_pink\_we\_floyd](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/in_pink_we_floyd/32/404826_2.png) [@In\_pink\_we\_floyd](https://discourse.mcneel.com/u/In_pink_we_floyd)\
**Post date:** [December 22, 2022, 7:58am UTC](https://discourse.mcneel.com/t/measuring-length-and-angle-on-slanted-surfaces/152441/1 "2022-12-22T07:58:08Z")

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Hello All,

My question is about measuring the lengths, angles (between two slanted surfaces), and anlyzing the relative positions between these trimmed surfaces. Since both surfaces are slanted there is no chance view their edges perpendicular in views Rhino provides. Orienting view to the surface may be the solution but I still could not find any way to do it even though I checked this forum.

Best regards.

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**Author:** ![encephalon](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/encephalon/32/611970_2.png) [@encephalon](https://discourse.mcneel.com/u/encephalon)\
**Post date:** [December 22, 2022, 8:21am UTC](https://discourse.mcneel.com/t/measuring-length-and-angle-on-slanted-surfaces/152441/2 "2022-12-22T08:21:27Z")

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have you got an image of the situation, better even a file? one idea without seeing anything would be to position a plane perpendicular to the normal of the angle you want to measure, then intersect with your geometry and measure it with angle.

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**Author:** ![In\_pink\_we\_floyd](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/in_pink_we_floyd/32/404826_2.png) [@In\_pink\_we\_floyd](https://discourse.mcneel.com/u/In_pink_we_floyd)\
**Post date:** [December 23, 2022, 7:55am UTC](https://discourse.mcneel.com/t/measuring-length-and-angle-on-slanted-surfaces/152441/3 "2022-12-23T07:55:25Z")

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Hello,

Attached image is a good example. How can you adjust your plane perpendicular to the normal of the angle you want to measure?

 ![geo](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/b/b/4/bb4056776e81ce049a64c4545ebe52b6b6a506ff.jpeg)

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**Author:** ![encephalon](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/encephalon/32/611970_2.png) [@encephalon](https://discourse.mcneel.com/u/encephalon)\
**Post date:** [December 23, 2022, 9:39am UTC](https://discourse.mcneel.com/t/measuring-length-and-angle-on-slanted-surfaces/152441/4 "2022-12-23T09:39:29Z")

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![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/6/2/e/62e1e2d08241af60efaa63185c86f25064f72215.jpeg)

use the command

> angle

start where the blue curve meets the red with snaps set to midpoint and for each curve click on the outside of either colored curve to receive your resulting angle

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**Author:** ![can.aysan](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/can.aysan/32/610994_2.png) [@can.aysan](https://discourse.mcneel.com/u/can.aysan)\
**Post date:** [December 23, 2022, 9:40am UTC](https://discourse.mcneel.com/t/measuring-length-and-angle-on-slanted-surfaces/152441/5 "2022-12-23T09:40:37Z")

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For **planar** surfaces, you can just pick 2 surfaces and use analyze/angle

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**Author:** ![Gijs](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/gijs/32/769882_2.png) [@Gijs](https://discourse.mcneel.com/u/Gijs)\
**Post date:** [December 23, 2022, 10:00am UTC](https://discourse.mcneel.com/t/measuring-length-and-angle-on-slanted-surfaces/152441/6 "2022-12-23T10:00:26Z")

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or measure all at once :

 ![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/2/1/6/21608ce3cc8e8937ea70c98cf448a8c8a7dcc716.png)

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**Author:** ![encephalon](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/encephalon/32/611970_2.png) [@encephalon](https://discourse.mcneel.com/u/encephalon)\
**Post date:** [December 23, 2022, 11:17am UTC](https://discourse.mcneel.com/t/measuring-length-and-angle-on-slanted-surfaces/152441/7 "2022-12-23T11:17:16Z")

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what is that?

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**Author:** ![Gijs](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/gijs/32/769882_2.png) [@Gijs](https://discourse.mcneel.com/u/Gijs)\
**Post date:** [December 23, 2022, 11:18am UTC](https://discourse.mcneel.com/t/measuring-length-and-angle-on-slanted-surfaces/152441/8 "2022-12-23T11:18:53Z")

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> [@encephalon](#):
>
> what is that?

> [@Global Edge Continuity - Release Candidate now on packagemanager](https://discourse.mcneel.com/t/global-edge-continuity-release-candidate-now-on-packagemanager/135551):
>
> I’ve been working on a global edge continuity tool lately and am looking for people that want to try it out and give me feedback for improvement. If you’re interested, please send me a pm. Sending a pm will not be a guarantee that you are sent the tool for evaluation, I will do this based on your given contributions on this forum, as I am looking for valuable feedback. You can select a single surface (and it will detect surrounding surfaces) or select multiple surfaces and or polysurfaces. Extr…