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Coursework Notes - Shape & Space

 

Triangle Congruency

 

definition

SAS

SSS

ASA

right-angled triangle

 

Definition of congruency

 

A triangle (or indeed any two dimensional shape) is deemed congruent to another if it has the same shape and the same size.

 

The second triangle can be rotated, reflected or translated in any way.

 

The first triangle must be able to fit over the second triangle exactly.

 

 

Tests for congruency - Side Angle Side (SAS)

 

sas

 

 

Tests for congruency - Side Side Side (SSS)

 

sss

 

 

Tests for congruency - Angle Side Angle (ASA)

 

asa

 

 

Tests for congruency - Right angle Hypotenuse and one Side (RHS)

 

rhs

 

 

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