Measurement



==Names of Angles ==  ===As the Angle Increases, the Name Changes ===    =3D Shapes =
 * ~ Type of Angle ||~ Description ||  ||
 * [|Acute Angle] || an angle that is less than 90° ||^  ||
 * [|Right Angle] || an angle that is 90° exactly ||^  ||
 * [|Obtuse Angle] || an angle that is greater than 90° but less than 180° ||^  ||
 * [|Straight Angle] || an angle that is 180° exactly ||^  ||
 * [|Reflex Angle] || an angle that is greater than 180° ||^  ||

There are many types of three-dimensional shapes. You've surely seen spheres and cubes before. In this lesson, you'll learn about polyhedra — three-dimensional shapes whose faces are [|polygons] — and you'll also learn about two special types of polyhedra: prisms and pyramids.

 http://www.bgfl.org/bgfl/custom/resources_ftp/client_ftp/ks2/maths/3d/index.htm