# Triangles and Quadrilateral Flow Chart by corinnebrown

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```									                   Triangles and Quadrilateral Flow Chart
I. Triangles
Find the lengths of all three sides using the distance
formula

Use the converse of the Pythagorean Theorem
Large2       small2 + small2

Get both of the following

All three sides are different then it is               If the      is < then it is Acute
Scalene                                                If the      is = then it is Right
If 2 sides are the same length then it is              If the      is > then it is Obtuse
isosceles

Find the slopes of all 4 sides

2 sets of equal slopes                 1 set of equal slopes       No sets of equal slopes

Are the nonequal slopes                    Find the length of the       Check your work. If it
opposite reciprocals?                       nonparallel sides          is correct then the

yes                 no
If they are        If equal
Find the length of 2        Find the length of 2        not equal          then the