Over St. Charles River - Geometry is a type of math that deals with points, lines, shapes, and surfaces. Examples are Circles, Rectangles, and Triangles. A rectangle is a closed 2-D shape, having 4 sides, 4 corners, and 4 right angles (90°).

Stock photo: Over St. Charles River - Geometry is a type of math that deals with points, lines, shapes, and surfaces. Examples are Circles, Rectangles, and Triangles. A rectangle is a closed 2-D shape, having 4 sides, 4 corners, and 4 right angles (90°). was taken by simmons48 .