Area of a triangle – Geometry
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 [...]
28
07, 2017
28
07, 2017
Area of an oval – Geometry
Area of an oval The area of an oval is the part of a plane that is inside its circumference. To figure out the area, you need to measure the height and width of the oval. [...]
28
07, 2017
Area of a circle – Geometry
The geometry of a circle The area of a circle is the flat surface inside its circumference. The area is always equal to the radius squared, multiplied by π (pi). Here's a proof that [...]
27
07, 2017
What’s an angle? Geometry made simple
Two lines cross and form four angles Where any two lines cross each other, they form four angles. These angles are parts of a circle (as you can see from the green circle segments), [...]
27
07, 2017
Medieval Islamic science
Medieval Islamic science: Al Tusi's diagram of linear motion from circular motion Indian and African science In the Early Middle Ages, before the formation of the Islamic Empire, Buddhists ran the world's biggest [...]
18
07, 2017
Who was Pythagoras? Greek Mathematics
Near where Pythagoras lived: Doric temple at Paestum, Italy Who was Pythagoras? Pythagoras lived in the 500s BC. He was one of the first Greek mathematical thinkers that we know about, after Thales. Who [...]
18
07, 2017
Greek mathematics – Geometry and Proofs
Greek mathematics: An Egyptian papyrus from about 100 AD which is a piece of one of Euclid's books Greek math: geometry not algebra Because people in ancient Greece had only very clumsy [...]
18
07, 2017
Who was Euclid? History of Geometry
An Egyptian papyrus from about 100 AD which is a piece of one of Euclid's books Euclid's life and background Nobody knows much about Euclid's life anymore - it is [...]
18
07, 2017
How to prove the Pythagorean Theorem
Diagram for proving the Pythagorean Theorem You can prove the Pythagorean Theorem for yourself, using the proof described on the Pythagorean Theorem page. Just get a square piece of paper, and [...]
18
07, 2017
Who was Archimedes? Eureka!
Archimedes was from Syracuse, Sicily. Here you see it with Mount Etna in the background When did Archimedes live? Archimedes was born about 287 BC, so he was a little younger [...]
