GCSE Maths (Edexcel)

435 videos | 33 hours

Labelling Right-Angled Triangles

Please subscribe to watch this video.

This, and all other videos, are included in our premium subscriptions.

Premium accounts get access to all videos.

Geometry and Measures Mensuration and Calculation

Labelling Right-Angled Triangles

2:25 Introduction to Trigonometry
Spec G1
Previous Volume of a Cylinder Next The Trigonometric Functions
  • A right angled triangle has one angle that is 90 degrees
  • The sides of a right angled triangle can be labeled according to their relation to one of the non right angles
  • The longest side of a right angled triangle is called the hypotenuse
  • The hypotenuse is always opposite the right angle
  • The side of the right angled triangle that is opposite the given angle is called the opposite
  • The remaining side of the triangle is called the adjacent
  • The adjacent side connects the vertices where the right angle and labeled angle sit
  • If the other angle was chosen, the opposite and adjacent sides would swap places
  • This concept is useful and will be used in math studies and exams.

Please subscribe to access these revision notes.

This, and all other video notes, are included in our premium subscriptions.

Premium accounts get access to all videos and revision notes.