# Angle measure incorrect: grasshopper

**URL:** <https://discourse.mcneel.com/t/angle-measure-incorrect-grasshopper/125553>\
**Category:** Grasshopper\
**Tags:** windows\
**Created:** [June 7, 2021, 7:28pm UTC](https://discourse.mcneel.com/t/angle-measure-incorrect-grasshopper/125553 "2021-06-07T19:28:57Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ashmikagp](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/ashmikagp/32/308308_2.png) [@ashmikagp](https://discourse.mcneel.com/u/ashmikagp)\
**Post date:** [June 7, 2021, 7:28pm UTC](https://discourse.mcneel.com/t/angle-measure-incorrect-grasshopper/125553/1 "2021-06-07T19:28:57Z")

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![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/8/d/f/8df08f732fbcbbc888d98962d97e3833f8e7c8e4.png)  
Hello everyone! I am trying to measure the angle between the edges adjacent to the green point shown in the picture above. I am using the compute angle between vectors tool, and I specified the plane in which I want to measure the angles as well. The problem is I keep getting a result which states that the angle is much smaller than 90 degrees but I can clearly see it is an obtuse angle. Why is it giving me a wrong measurement and how do I fix this?

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**Author:** ![jeremy5](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/jeremy5/32/493741_2.png) [@jeremy5](https://discourse.mcneel.com/u/jeremy5)\
**Post date:** [June 7, 2021, 7:38pm UTC](https://discourse.mcneel.com/t/angle-measure-incorrect-grasshopper/125553/2 "2021-06-07T19:38:03Z")

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Check the direction of the vectors: is one perhaps pointing towards the green point and one away from it?