A wedge is a three-dimensional geometric shape that has a right - triangular cross-section with a 90^o corner and typically tapers from a thick end to a thin edge. It can be thought of as a prism with a triangular base, where one face is slanted, forming an inclined plane. It has five sides.

Properties of a Wedge Shape:

• Base: Typically a rectangle or a parallelogram.
• Sides: At least one slanted face, usually a triangle.
• Edges: The meeting points of the faces create sharp edges, often leading to a thin end.
• Angles: The wedge often has an acute angle at one end and a broader face at the other.

Examples of Wedges in Real Life:

• Tools: Axe heads, chisels, doorstops.
• Natural Forms: Some rock formations and ice wedges.
• Engineering: Airplane wings and hydrofoils have wedge-like cross-sections for aerodynamics