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Level 478

Area of Polygons


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area
the surface; Length x Width
square unit
a unit for measuring area
triangle
P=a+b+c
Right Triangle
A triangle with one right angle.
Quadrilateral
A polygon with 4 sides and 4 angles.
polygon
a closed figure made by joining line segments where each line segment intersects exactly 2 others
regular polygon
a convex polygon in which all sides and angles are congruent
Parallelogram
p=s+s+b+b
Trapezoid
P=s1+s2+b1+b2