Right Angled

1 angle is a right angle which is 90 degrees
No lines of symmetry


The longest side is called the hypotenuse

Pythagoras Theorem

This only works for right angled triangles
a2 + b2 = c2
Using the length of 2 sides you can calculate the length of the third side.

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Basic Trigonometry

More Details
Calculating the length of the sides
Calculating the size of the angles - using the inverse functions

sin x = opposite / hypotenuse

cos x = adjacent / hypotenuse

tan x = opposite / adjacent

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