Geometry/Similar Triangles

Similar Triangles.svg

For two triangles to be similar, all 3 corresponding angles must be congruent, and all three sides must be proportionally equal. Two triangles are similar if...

  • Two angles of each triangle are congruent.
  • The acute angle of a right triangle is congruent to the acute angle of another right triangle.
  • The two triangles are congruent. Note here that congruency implies similarity.


  • Part II- Coordinate Geometry:
    • Geometry/Synthetic versus analytic geometry
  • Geometry/An Alternative Way and Alternative Geometric Means of Calculating the Area of a Circle
Last modified on 5 December 2012, at 23:10