Family of Planes Passing through the Intersection of Two Planes
Count the num...
Question
Count the number of triangles in the given figure
A
38
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B
36
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C
40
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D
45
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Solution
The correct option is A 38
Figure is symmetrical about the dotted line Number of △'s in first quarter : T1,T2,T6,T5,T4,T7,T8,T7T8,T4T8T7 Number of triangles in four quarters =9×4=36