1 General Mental and Psychological Abilities · 1.4.2 Geometry and trigonometry

1.4.2.3 Right triangles: Pythagoras, triples and special triangles

In a right triangle the square on the hypotenuse equals the sum of the squares on the legs; knowing the common triples and the 30-60-90 and 45-45-90 ratios turns most questions into one-line answers.

  • APPSC Group 1
  • Advanced level
  • 6 min read
  • Full course

Key terms

  • Pythagoras theorem
  • converse
  • Pythagorean triples
  • 30-60-90 triangle
  • 45-45-90 triangle
  • altitude on hypotenuse
  • acute or obtuse test
  • ladder problems
  • diagonal of cuboid
  • inradius

What this note covers

  1. Core factsFoundation
  2. ExplainedStandard
  3. DeeperAdvanced
  4. Common trapsFoundation
  5. Quick revisionFoundation

Read the full note in the app. It is part of the APPSC Group 1 full course in Medha AI. Free in the app: the first chapter of each topic.

Read the full note in the app General Mental and Psychological Abilities questions with answers

All Geometry and trigonometry notes · APPSC Group 1 syllabus · APPSC G1 Paper I Mock 1 with answers · Start free

Medha AI writes its own notes and checks them against the sources listed. Medha AI is an independent preparation service. It is not affiliated with, endorsed by or connected to APPSC, TSPSC, MPSC, UPSC or any other commission or government body.