Rotate

Transform angle of an Object
Home tab > Modify panel > Rotate

Specify base point

Specify rotation angle (CCW +, CW -)





Rotate by Grip

Select object > Click a base point > Right-click > Rotate

Specify rotation angle

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Copy option

Select object > Specify base point

Key-in "C" for copy option

Specify rotation angle

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Reference option

Key-in "R" for reference option

Snap 2 points for the reference angle

Key-in the rotation angle