Right Triangles

Right triangle - triangle with one right angle (90°)

Pythagorean theorem: a² + b² = c²

• a = leg 1, b = leg 2, c = side 3 (the longest one)

  
  

• ex; a = 5, b = x, c = 8

  5² + x² = 8²

  25 + x² = 64

  x = √39

  
  

• ex; a = x, b = 4, c = 5

  x² + 4² = 5²

  x² + 16 = 25

  x = 3