Geometry is the branch of mathematics concerned with questions of shape, size, relative position of figures, and the properties of space.

Basic Concepts in Geometry

  • Points are zero-dimensional objects that have no length, width, or height.
  • Lines are one-dimensional objects that have length but no width or height.
  • Planes are two-dimensional objects that have length and width but no height.

Important Theorems

  • Pythagorean Theorem: For a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides.
  • Thales' Theorem: If a triangle is inscribed in a circle, then the angle subtended by a chord at the center is twice the angle subtended at the circumference on the opposite side.

Geometry Theorem

Further Reading

For more in-depth information on geometry, you can visit our Geometry Resources.

Remember, mathematics is not just about numbers; it's about understanding the world around us.