You are searching about *What Is A Right Angle In Math*, today we will share with you article about What Is A Right Angle In Math was compiled and edited by our team from many sources on the internet. Hope this article on the topic **What Is A Right Angle In Math** is useful to you.

## Mini Math Bio – Thales, The Father of Geometry

Thales, the Greek mathematician from Miletus, Ionia (now Western Turkey), is credited with formulating the very first “Principles of Geometry”.

Imagine, although human beings have lived on earth for hundreds of thousands of years, they had to wait until the 6th century BC to discover the following interesting rules that guide the behavior of triangles and circles:

Thales Rule #1: If you draw a triangle inside a circle, if the point of the triangle rests on the circumference and the diameter of the circle forms the long side of the triangle, then the angle formed by the two other shorter sides form a right angle of 90 degrees – regardless of the length of the shorter sides. (This rule is also known as “Thales’ theorem”.)

Thales rule n°2: The diameter of a circle divides it into two equal parts and into two arcs of equal length.

Thales rule n°3: if two triangles have a side of equal length and two angles of equal degrees, then these two triangles are identical.

Thales rule n°4: Two intersecting straight lines form four angles around their point of intersection. Opposite angles are equal angles. In other words, two intersecting lines form two pairs of equal angles.

Thales Rule #5: A triangle with two equal sides, i.e. an isosceles triangle, has equal angles where the equal sides intersect with the third side.

We owe the beginnings of our modern mathematics and geometry to a man who was so enamored with what he was doing that one day, according to Plato, Thales fell into a well of water while gazing at the stars. So, it might not be an exaggeration to say that Thales was also the very first “distracted teacher” we had.

## Video about What Is A Right Angle In Math

You can see more content about **What Is A Right Angle In Math** on our youtube channel: Click Here

## Question about What Is A Right Angle In Math

If you have any questions about **What Is A Right Angle In Math**, please let us know, all your questions or suggestions will help us improve in the following articles!

The article **What Is A Right Angle In Math** was compiled by me and my team from many sources. If you find the article What Is A Right Angle In Math helpful to you, please support the team Like or Share!

## Rate Articles What Is A Right Angle In Math

**Rate:** 4-5 stars

**Ratings:** 8440

**Views:** 77278381

## Search keywords What Is A Right Angle In Math

What Is A Right Angle In Math

way What Is A Right Angle In Math

tutorial What Is A Right Angle In Math

What Is A Right Angle In Math free

#Mini #Math #Bio #Thales #Father #Geometry

Source: https://ezinearticles.com/?Mini-Math-Bio—Thales,-The-Father-of-Geometry&id=1732169