Mathemagic - 2D Shape Properties

	Two-dimensional shapes are flat. Click on a shape to view its properties.
Triangle	A triangle is a two-dimensional shape with three straight sides and three angles. There are different types of triangle called equilateral, isosceles, scalene and right-angled.
Square	A square is a special rectangle that has four sides of the same length and four angles of 90 degrees. It has two pairs of opposite sides that are parallel.
Rectangle	A rectangle is a four-sided shape with two pairs of parallel sides that meet at right-angles. It has two long sides and two shorter sides. A square is a special kind of rectangle because all its sides are the same length.
Circle	A circle is a round, flat two-dimensional shape where all points on the circumference are the same distance from the centre.
Hexagon	A hexagon is a two-dimensional shape with six straight sides and six angles. In a regular hexagon all the sides are the same length and the angles are the same.
Pentagon	A pentagon is a two-dimensional shape with five straight sides and five angles. A regular pentagon has all its sides the same length and all its angles equal.
Trapezium	A trapezium has four sides (a quadrilateral). It has one set of parallel sides and usually has two obtuse angles and two acute angles. The angles in an irregular trapezium can all be different sizes.
Kite	A kite is a four-sided shape. Its adjacent sides (pairs of sides next to each other) are equal in length. Its diagonals meet at right angles.
Rhombus	A rhombus is a four-sided shape or quadrilateral. The sides are all the same length and the opposite sides are parallel. Its opposite sides are equal. It looks like a square which has had a push.
Parallelogram	A parallelogram is a four-sided shape or quadrilateral. It has two pairs of parallel sides. Its opposite sides are equal in length.
Octagon	An octagon is a flat shape with eight equal sides and eight equal angles.
	Remember that shapes can have line symmetry and rotational symmetry.