Quadrilaterals Contain Parallelograms: Varignon's Theorem. ByKevin Knudson, Former Contributor. Forbes contributors publish independent expert analyses and insights.

The perimeter and area of triangles, quadrilaterals (rectangle, parallelogram, rhombus, kite and square), circles, arcs, sectors and composite shapes can all be calculated using relevant formulae ...

SUBJECTS: Maths YEARS: 5–6, 7–8. A quadrilateral is a four-sided shape, where the sides are straight and meet at four vertices. The prefix “quad” means four.

Perimeter and area. In this National 4 Lifeskills Maths study guide, you can revise how to find the perimeter and area of triangles, quadrilaterals (rectangle, parallelogram, rhombus, kite and ...