Thales ( 624-546 BC) was an ancient Philosopher lived in Ancient Greece now forms a part of Turkey.
Thales regarded as the First True Mathematician , because of the many important contributions made to the field of Mathematics, Especially in Geometry.
Thales used geometry to calculate the distance of a ship from the shore. He also figured out a way to measure the height of a Pyramids.
Its a very interesting way. The time of day when his own shadow was same height that he was he measure the shadow of the Pyramid to get the height.
Thales was a great mathematician, He proves that:–
- A circle is bisected or cut into halves by its diameter.
- The angle at the base of an isosceles triangle are equal.
- An angle is is the shape of the space between two straight lines at the point where they meet.
- If two straight line cut one another, the opposite angles are equal. Now known as Vertically opposite angle.
- If two triangles have two angle and a side in common, the triangles are identical. Now known as AAS (Angle Angle Side) Law.