Summary Mathematics

Topic Formula Notes Other
Congruent SSS  Same shape/size
SAS
AAS
RHS
Corresponding angles  Look for an F
 X=Y corresponding As AB//CD
Alternate angles  Look for a Z
 X=Y alternate As AB//CD
Co-interior angles  Look for a C
 X+Y=180 co-interior As AB//CD
Translation (x;y) ( ; )  Up + Reason (x;y) ( ; )
 Down –
  --
 +
Reflections x-axis The x value stays the same the y value sign Reason x=y
(x;y)(x;-y) changes (-1;3) = (-1;-3)

y-axis The y value stays the same the x value sign Reason x=y
(x;y)(-x;y) changes (-1;3) = (1;3)

Y=X Change the x and y coordinate Reason x=y
(x;y)(y;x) (-1;3) = (3;-1)
Rotations Clockwise Change the x and y coordinate and change
900 (x;y)(y;-x) the sign Eg (-1;3) = (3;1)
1800 (x;y)(-x;-y) Eg (-1;3) = (1;-3)