DmAngle3d creates an angle constraint between faces and/or edges of 3D solids, WCS subentities, and subentities of a coordinate system of a block. Creates a Planar Angle constraint by default: coordinate planes of the WCS are used as third reference objects whenever possible. It also allows you to control the top angle of a cone.
Accessing the Command
Angle
Cone angle
command bar: dmangle3d
menu bar: Parametric  3D Constraints  Angle
toolbar: 3D Constraints  Angle
ribbon:
 Modeling Workspace
 Home  Parametrize  Angle and Cone angle
 Solid  Parametrize  Angle and Cone angle
 Parametric  Parametrize  Angle and Cone angle
 Mechanical Workspace
 Home  Parametrize  Angle and Cone angle
 Solid  Parametrize  Angle and Cone angle
 Surface  Parametrize  Angle and Cone angle
 Sheet Metal  Parametrize  Angle and Cone angle
 Assembly  3D Constraints  Angle and Cone angle
 BIM Workspace
 Parametric  Parametrize  Angle and Cone angle
Quad cursor menu: Constraints  Angle and Cone angle
: dmAngle3d
Prompts you in the command bar:
Select first entity or specify [cone Angle constraint/World/Block]: (Select a face or an edge.)
Select second entity [WOrld/BLock]: (Select a face or an edge or select an option.)
Specify angle value (reference: Global XY plane) or [Set reference entity/Geometrydriven] <90.00>: (Either press Enter to accept the current value, type a new value, select reference entity, or create geometrydriven constraint.)
Hit the TAB key to select obscured geometry.
Command Options
Option 
Description 
cone Angle constraint 
Allows you to control the top angle of a cone by specifying the angle between the axis and the cone face (= cone half angle). Prompts you: Select a cone face:  (Select the face of a cone.) Specify angle value [Geometrydriven] <xx.xx>:  (Either hit Enter to accept the current value or type a new value. Values must be greater than 0° and smaller than 90°.) 
World 
Allows you to select the WCS subentity as an argument. Prompts you: Select reference coordinate system subentity [X axis/Y axis/Z axis/XY plane/YZ plane/ZX plane]:  (Select a reference coordinate system subentity as an argument.) 
Block 
Allows you to choose, as an argument, the subentity of the coordinate system of the block. Prompts you: Select block reference  (Select a block reference of which the reference coordinate system will be used as an argument.) Select reference coordinate system subentity [X axis/Y axis/Z axis/XY plane/YZ plane/ZX plane]  (Select a reference coordinate system subentity as an argument.) 
Set reference entity

Allows you to manually specify the reference entity. Prompts you: Select reference entity [Keep as is/WOrld/BLock/None]:

Geometrydriven 
Accepts the current value and creates a geometrydriven constraint. 
Related Commands
MechanicalBrowserOpen  displays the Mechanical Browser.
DmConstraint3D  applies geometric relationships and dimensional constraints between subentities (faces, surfaces, edges, etc) of 3D entities.
DmUpdate  Forces 3D constraints to update.
DmCoincident3d  applies a coincident constraint between two edges, two faces or an edge and a face of two different solids.
DmConcentric3d  applies a concentric constraint between two cylindrical, spherical or conical surfaces.
DmDistance3d  applies a distance constraint between two subentities of a solid or of different solids.
DmFix3d  Applies a fixed constraint to a solid or to the edge or face of a solid.
DmParallel3d  applies a parallel constraint between two faces of a single solid or two different solids.
DmPerpendicular3d  applies a perpendicular constraint between two faces of a solid or of different solids.
DmRadius3d  applies a radius constraint to cylindrical surfaces or circular edges.
DmRigidSet3d  Allows you to define a set of entities or subentities as a rigid body.
DmTangent3d  applies a tangent constraint between a face and a curved surface of different solids.