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Question
If two triangular pyramids are sticked along a common base, then find the total number of edges in resultant solid figure.
If two triangular pyramids are sticked along a common base, then find the total number of edges in resultant solid figure.
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Solution
The correct option is C 9
Triangular pyramid has 6 edges.
When two triangular pyramids are joined together along a common base, three edges are common.
So, the total number of edges in the resultant figure = 6 + 6 – 3 = 9
Hence, 9 is the correct answer.
Triangular pyramid has 6 edges.
When two triangular pyramids are joined together along a common base, three edges are common.
So, the total number of edges in the resultant figure = 6 + 6 – 3 = 9
Hence, 9 is the correct answer.
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