Perimeter
Geometry
Level
2
The above figure is an equilateral triangle, which of the following is the perimeter of the triangle?
Try some geometry problems .
72
27
45
54
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1 solution
Since the triangle is equilateral, M O = M K
3 x − 9 = 2 x
x = 9 u n i t s
Length of one side is ( 2 ) ( 9 ) = 1 8 units.
p e r i m e t e r = 3 ( 1 8 ) = 5 4 u n i t s