Omar Khayyám, a Persian mathematician and astronomer, made significant contributions to geometry and number theory during the Islamic Golden Age.

The Angle Sum Theorem states that the sum of the interior angles of a triangle is always 180 degrees, regardless of the size or shape of the triangle.

Leonardo of Pisa, also known as Fibonacci, is credited with introducing the Fibonacci sequence to the Western world in his book 'Liber Abaci'.

A triangle is a geometric shape with three sides and three angles.

Al-Ghazali, a Persian philosopher and theologian, explored the concept of infinity in his philosophical writings.

Heron's Formula provides a method for calculating the area of a triangle using its side lengths.

Al-Khwarizmi, a Persian mathematician, developed the Hindu-Arabic numeral system, which is widely used today.

A square is a geometric shape with four equal sides and four right angles.

Ibn al-Haytham, an Arab mathematician and scientist, made significant contributions to the field of optics and visual perception.

The Pythagorean Theorem is a fundamental theorem in geometry that relates the side lengths of a right triangle.

Al-Khwarizmi developed a method for solving quadratic equations, which is known as the 'Al-Khwarizmi method'.

A pentagon is a geometric shape with five sides and five angles.

Al-Khwarizmi, a Persian mathematician, made significant contributions to algebra and number theory.

The Area of a Circle Formula provides a method for calculating the area of a circle using its radius.

Al-Biruni, a Persian mathematician and astronomer, made significant contributions to trigonometry.