# Measuring Angles from Panos

In addition to taking measurements in SiteView, users also have the option of measuring angles from 360° photos within a digital twin. To do so, users must first select three points from the panos to define the vertex before CupixWorks automatically calculates the value of the angle.

SiteView offers the following point selection methods when measuring an angle:

- Stereo Matching - The user defines a point by clicking on that same point in two different panos.
- On 3D Object - The user defines a point by clicking on a 3D object.
- On 2D Plane or Floor - The user defines a point by clicking on a 2D plane or the floor as defined by the SiteView coordinate system.

To select points within a pano, users must use either the Stereo Matching or On 2D Plane or Floor options.

## Measure an Angle Within a Pano

Video: To see this process in action, check out our video on Measuring Angles in SiteView.

## Measure Angles with Stereo Matching

If a desired point is not on the floor (ie: on a wall, on an object at the jobsite), you will need to use the Stereo Matching point selection method to define that point.

To measure angles in SiteView by defining points with Stereo Matching:

- Click
**Measure**>**Angle**>**Stereo Matching**. - Within the pano, click the location of the first point.
- After SiteView automatically navigates to a different pano, click the location of the first point again.Note If the SiteView selected pano is not useful (ie: the point is no longer visible), you can navigate to a different pano by holding CTRL and clicking the pano you want to use.
- Once a point is defined, the ray between two points will be shown as a blue line connecting the previously selected point to your mouse pointer.Note: To lock ray so it is parallel the X, Y, or Z axis in the SiteView coordinate system, turn on Parallel to Axis from the Point Selection Menu. Use this option to define rays along a beam or parallel to a wall.
- Repeat steps 2 through 4 to define the second (vertex) and third points.

After the third point is selected, the angle between the rays defined by the three points is displayed on the pano in blue.

## Define a Point using 2D Plane or Floor

If a point is located on the floor of the digital twin, you can define the point by clicking on it once instead of selecting it from two different panos. The 2D Plane or Floor point selection method allows you to select points along the floor plane defined by the SiteView coordinate system.

To define a point using the 2D Plane or Floor method:

- Click
**Measure**>**Angle**>**On 2D Plane or Floor**. - Within the pano, directly click on the location of the point on the floor.
- Continue selecting points on the floor, or switch back to Stereo Matching to define points not located on the floor.

After the third point is selected, the angle between the rays defined by the three points is displayed on the pano in blue.