Eight.
four corners
A rectangle is a quadrilateral therefore it has to have 4 corners.
There are 4 corners in a flat rectangle and 8 corners in a 3d rectangle(rectangular prism).Four.
Every rectangle must have corners otherwise it would not be a rectangle!Every rectangle must have corners otherwise it would not be a rectangle!Every rectangle must have corners otherwise it would not be a rectangle!Every rectangle must have corners otherwise it would not be a rectangle!
A 3d rectangle, or a cuboid, has eight corners.
There are 4 corners in a flat rectangle and 8 corners in a 3d rectangle(rectangular prism).Four.
A rectangle has four corners, or vertices
A rectangle has 4 corners.
A rectangle has 6 faces, 12 edges, and 8 corners. Wrong, that's a cube.
4
4 of them.