# Rectangle

**URL:** <https://community.cesium.com/t/rectangle/2144>\
**Category:** CesiumJS\
**Created:** [March 12, 2015, 12:22pm UTC](https://community.cesium.com/t/rectangle/2144 "2015-03-12T12:22:41Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![luanantonio](https://avatars.discourse-cdn.com/v4/letter/l/cc9497/32.png) [@luanantonio](https://community.cesium.com/u/luanantonio)\
**Post date:** [March 12, 2015, 12:22pm UTC](https://community.cesium.com/t/rectangle/2144/1 "2015-03-12T12:22:41Z")

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how to know if a rectangle is in the same region of another in cesium?

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**Author:** ![Scott\_Hunter](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/scott_hunter/32/2006_2.png) [@Scott\_Hunter](https://community.cesium.com/u/Scott_Hunter)\
**Post date:** [March 12, 2015, 8:04pm UTC](https://community.cesium.com/t/rectangle/2144/2 "2015-03-12T20:04:05Z")

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You can use Rectangle.intersection.

[http://cesiumjs.org/Cesium/Build/Documentation/Rectangle.html](http://cesiumjs.org/Cesium/Build/Documentation/Rectangle.html)

if intersection(A, B) equals A, then A is fully contained by B.