# area

17 08, 2017

## Black holes – Space science – Physics

By |2019-02-20T19:38:04-08:00August 17th, 2017|Physics|Comments Off on Black holes – Space science – Physics

A starry sky with the Milky Way galaxy (thanks to Bernd Nies) - there are probably black holes in there somewhere! What is a black hole? A black hole is [...]

29 07, 2017

## What is area? Simple geometry

By |2017-07-29T13:29:39-07:00July 29th, 2017|Math|Comments Off on What is area? Simple geometry

Calculating the area of your room. The area of a room is the size of the floor. Suppose you wanted to find out whether your room was really bigger than [...]

29 07, 2017

## What is a triangle? Simple geometry

By |2017-07-29T13:19:10-07:00July 29th, 2017|Math|Comments Off on What is a triangle? Simple geometry

This is an equilateral triangle. A triangle is any set of three points on a plane and the lines connecting those points to each other, as long as the three points aren't all on the [...]

29 07, 2017

## What is a trapezoid? Simple geometry

By |2017-07-29T13:16:13-07:00July 29th, 2017|Math|Comments Off on What is a trapezoid? Simple geometry

This is a trapezoid. A trapezoid is a kind of quadrilateral that has at least two sides that are parallel to each other. A parallelogram is a trapezoid that has two pairs of parallel [...]

29 07, 2017

## Area of a sphere – Volume of a sphere

By |2017-07-29T13:10:50-07:00July 29th, 2017|Math|Comments Off on Area of a sphere – Volume of a sphere

This is a sphere. A sphere is a three-dimensional circle. Or you could say that a sphere is the set of all the points that are at the same distance from the center [...]

29 07, 2017

## Right triangle – Simple geometry

By |2017-07-29T13:00:51-07:00July 29th, 2017|Math|Comments Off on Right triangle – Simple geometry

This is a right triangle, because one of the angles is a right angle. A right triangle is any triangle where one of the angles is exactly 90 degrees, or a right angle. You [...]

29 07, 2017

## What is a rhombus? Simple geometry

By |2018-04-23T16:01:48-07:00July 29th, 2017|Math|Comments Off on What is a rhombus? Simple geometry

This is a rhombus, divided so you can figure out the area. A rhombus is a kind of quadrilateral that has two sides that are parallel to each other, and another two sides that [...]

29 07, 2017

## What is a pyramid? Square pyramids

By |2017-07-29T11:57:36-07:00July 29th, 2017|Math|Comments Off on What is a pyramid? Square pyramids

A pyramid with a square base. A pyramid is a three-dimensional solid form made out of triangles. Some pyramids also use a square. There are two common kinds of pyramids: triangular pyramids that you [...]

29 07, 2017

## What is a prism? Rectangular and triangular prisms

By |2017-07-29T11:53:44-07:00July 29th, 2017|Math|Comments Off on What is a prism? Rectangular and triangular prisms

This is a triangular prism A prism is the solid shape you get if you move a flat polygon through space. A prism has five planes: a top, a bottom, and [...]

29 07, 2017

## What is an isosceles triangle? Simple geometry

By |2019-10-07T18:17:58-07:00July 29th, 2017|Math|Comments Off on What is an isosceles triangle? Simple geometry

This is an isosceles triangle. Definition of an isosceles triangle Isosceles triangles have at least two sides that are exactly the same length. This forces two of their angles to also be acute angles of exactly [...]

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