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Standard VIII
Mathematics
Question

ABCDE is a regular pentagon. A star of five points ACEBDA is formed to join their alternate vertices. The sum of all five vertex angles of this star is
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  1. Two right angle
  2. Four right angle
  3. Three right angle
  4. Five right angle

A
Five right angle
B
Two right angle
C
Three right angle
D
Four right angle
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Solution
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∠y=∠D+∠A

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