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14.2
Triangles
Sum of angles in a triangle 180
Sum of angles is a triangles
180(
n
-
2)
Pythagoras’ theorem
A right triangle with short sides of length
a
and
b
and long side of length
c
satisfies
a
2
+
b
2
=
c
2
.
Area of triangle:
base * hight / 2
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