bilateral symmetry

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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

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 [...]

29 07, 2017

Painting bilateral symmetry project

By |2017-07-29T09:37:57-07:00July 29th, 2017|Math|0 Comments

A painting with bilateral symmetry - made using mirroring in a paint program To see what bilateral symmetry is, paint a picture. Take a sheet of paper and fold it in half, carefully lining up the corners. Unfold the paper, and paint a picture just on one side of the fold line. While [...]

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 [...]

26 05, 2017

What is a flatworm? Evolution and Biology

By |2019-06-10T15:52:10-07:00May 26th, 2017|Biology|0 Comments

A flatworm When did flatworms evolve? The first flatworms, or platyhelminthes, probably evolved from something like a hydra about 550 million years ago. What's a hydra? Proterozoic Eon All our biology articles Like all other living things at this time, these early flatworms all lived in the ocean. A flatworm has a body [...]