triangle

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16 09, 2017

Babylonian math problem – West Asian science

By |2019-09-04T05:48:54-07:00September 16th, 2017|West Asia|2 Comments

A real Babylonian math problem on a clay tablet What math problems did Babylonian kids do? This is a real math problem assigned to Babylonian kids in Iraq about 1900 BC. See if you can do it. Here's the problem: Suppose you have two equilateral triangles, one inside the other. Can you figure out the area [...]

29 07, 2017

What is a triangle? Simple geometry

By |2017-07-29T13:19:10-07:00July 29th, 2017|Math|0 Comments

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 same line (that would just be a line). Or, you could think of a triangle as the part of the plane that lies [...]

29 07, 2017

Right triangle – Simple geometry

By |2017-07-29T13:00:51-07:00July 29th, 2017|Math|0 Comments

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 can't have more than one 90 degree angle in a triangle, or it would be a rectangle. In a right triangle, the side opposite [...]

29 07, 2017

What is a plane? Simple geometry

By |2017-07-29T11:48:47-07:00July 29th, 2017|Math|2 Comments

A plane goes on infinitely in all directions. Just as a line is made of an infinite number of points, a plane is made of an infinite number of lines that are right next to each other. A plane is flat, and it goes on infinitely in all directions. A sheet of paper represents a small part of [...]

29 07, 2017

Geometry made easy!

By |2019-07-05T09:30:53-07:00July 29th, 2017|Math|0 Comments

Geometry: This is an equilateral trangle. What is geometry? The simplest geometric idea is the point, and then the line, the plane, and the solid. Shapes like circles, squares, rectangles, and triangles are flat, and we can think of them as being parts of a plane, flat like a drawing. What is a point? What is a plane? From planes to solids All [...]

29 07, 2017

What is an isosceles triangle? Simple geometry

By |2019-10-07T18:17:58-07:00July 29th, 2017|Math|0 Comments

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 the same size. What is a triangle? More geometry All our math articles In this blue triangle, the two longer sides are the [...]

29 07, 2017

What is a hexagon? Simple geometry

By |2019-08-13T22:11:41-07:00July 29th, 2017|Math|0 Comments

This is a hexagon. See, it has six sides that are all the same length. Definition of a hexagon A hexagon is a flat shape, all in one plane, with six sides all of equal length. Each of the six angles measures 120 degrees, so the total interior angles of this shape measure 720 degrees [...]

29 07, 2017

Equilateral triangle – Simple geometry

By |2019-05-30T20:07:26-07:00July 29th, 2017|Math|0 Comments

This is an equilateral triangle. What makes a triangle equilateral? Equilateral triangles have all three sides exactly the same length. Because their sides are the same length, the three angles of an equilateral triangle are also all the same size, so they're each one third of 180 degrees, or 60 degrees. What is a triangle? What are angles? All [...]

28 07, 2017

Bilateral symmetry – Geometry

By |2019-02-14T07:17:30-07:00July 28th, 2017|Biology, Math|0 Comments

A butterfly has bilateral symmetry. Thanks to Wikimedia Commons What is bilateral symmetry? A shape has bilateral symmetry when it is the same on both sides of a line drawn down the middle. Are humans symmetrical? Venus of Lespugue, ca. 25000 BC, now in the Musee du Quai Branly, Paris You [...]

28 07, 2017

Area of a triangle – Geometry

By |2017-07-28T00:05:09-07:00July 28th, 2017|Math|0 Comments

Area of a triangle To figure out the area of a triangle, multiply the base by the height of the triangle, and then divide by two: (Base x Height)/2. That's because the height times the base gives you the area of a quadrilateral, and in this case it's the area of the quadrilateral made by putting together [...]