shapes

• a prism is a 3d shape with the same 2d shape all the way through it. this 2d shape is called the cross-section
• compound 3d shapes are 3d shapes made up of multiple simpler 3d shapes
• congruent shape - they have the same dimensions and have either been deflected, rotated or translated
• vertically oposite angles are equal
• corresponding angles are equal
• alternate angles are equal
• co-interiors add up to 180 degrees