## What is the formula of Thales theorem?

(B + A) = |A|2 − |B|2. Hence: |A| = |B|. This means that A and B are equidistant from the origin, i.e. from the center of M. Since A lies on M, so does B, and the circle M is therefore the triangle’s circumcircle.

## What is Pythagoras theorem class 7th?

Pythagoras theorem states that “In a right-angled triangle, the square of the hypotenuse side is equal to the sum of squares of the other two sides“. The sides of this triangle have been named Perpendicular, Base and Hypotenuse.

What is Thales law?

The Thales theorem states that: If three points A, B, and C lie on the circumference of a circle, whereby the line AC is the diameter of the circle, then the angle ∠ABC is a right angle (90°).

### What is Thales theorem in triangle?

The basic proportionality theorem, also known as the Thales theorem states that “the line drawn parallel to one side of a triangle and cutting the other two sides divides the other two sides in equal proportion”.

### What were Thales 5 theorems of elementary geometry?

In particular, he has been credited with proving the following five theorems: (1) a circle is bisected by any diameter; (2) the base angles of an isosceles triangle are equal; (3) the opposite (“vertical”) angles formed by the intersection of two lines are equal; (4) two triangles are congruent (of equal shape and size …

Who discovered Pythagoras theorem?

Euclid I 47 is often called the Pythagorean Theorem, called so by Proclus – a Greek philosopher who became head of Plato’s Academy and is important mathematically for his commentaries on the work of other mathematicians – and others centuries after Pythagoras and even centuries after Euclid.

## Who discovered Thales Theorem?

He used two of his earlier findings — that the base angles of an isosceles triangle are equal, and the total sum of the angles in a triangle equals two right angles — in order to prove theorem #5. According to Diogenes Laertius, when Thales discovered this theorem, he sacrificed an ox!

What is the another name of Thales Theorem?

The Basic Proportionality Theorem, also known as Thales’ theorem, is an important theorem in elementary geometry about the ratios of various line segments that are created if a line is drawn parallel from one side of a triangle to the other. It is equivalent to the theorem about ratios in similar triangles.