Brahmagupta is widely regarded as the 'Father of Indian Geometry' for his significant contributions to the field.

Bhaskara II is credited with developing the concept of 'cyclic quadrilaterals', which are quadrilaterals whose vertices lie on a circle.

Brahmagupta's Theorem states that the sum of the squares of the diagonals of a parallelogram is equal to the sum of the squares of its sides.

Baudhayana is known for his work on the 'Sulba Sutras', which are a collection of mathematical texts that deal with geometry, astronomy, and other mathematical topics.

Bhaskara's Theorem states that the area of a triangle is equal to half the product of its base and height.

Aryabhata is credited with developing the concept of 'concyclic points', which are points that lie on the same circle.

The Angle Sum Property states that the sum of the interior angles of a triangle is equal to 180 degrees.

Bhaskara II is known for his work on the 'Lilavati', which is a treatise on mathematics that covers topics such as arithmetic, algebra, geometry, and astronomy.

The Area of a Circle Formula states that the area of a circle is equal to pi multiplied by the square of its radius.

Varahamihira is known for his work on the 'Brihatsamhita', which is an encyclopedia that covers topics such as astronomy, astrology, mathematics, and architecture.

The Volume of a Sphere Formula states that the volume of a sphere is equal to four-thirds pi multiplied by the cube of its radius.

Bhaskara II is known for his work on the 'Siddhanta Shiromani', which is a treatise on astronomy and mathematics that covers topics such as trigonometry, algebra, and calculus.

The Pythagorean Theorem states that the sum of the squares of the sides of a right triangle is equal to the square of the hypotenuse.

Aryabhata is known for his work on the 'Aryabhatiya', which is a treatise on mathematics and astronomy that covers topics such as arithmetic, algebra, geometry, and trigonometry.

Heron's Formula states that the area of a triangle is equal to half the product of its base and height.