Interior angles in a quadrilateral add up to 360°. Symmetry and 2D shapes Parts of a shape on either side of a line of symmetry will be exact mirror images of each other. Different two ...

A shape has a line of symmetry when the folded part sits perfectly on top with all edges matching. The number of lines of symmetry in a regular polygon is equal to the number of sides. A shape has ...

The kinetic sculpture can be thought of as a part of an infinite tiling of self similar quadrilaterals in the ... leads to different types of rotational symmetry that can be achieved as the ...