Verified by Ajay Kumar
How many diagonals are there in a regular pentagon?
5
7
10
15
Answer: A
Solution: The number of diagonals of an n-sided polygon is \(\frac{n(n-3)}{2}\). For a pentagon, n = 5. Therefore, \(\frac{5(5-3)}{2}=\frac{5\times2}{2}=5\). Trick: Use the diagonal formula \(n(n-3)/2\).
एक सम पंचभुज में कितने विकर्ण होते हैं?
5
7
10
15
उत्तर: A
हल: n भुजाओं वाले बहुभुज के विकर्णों की संख्या \(\frac{n(n-3)}{2}\) होती है। पंचभुज के लिए n = 5 है। इसलिए \(\frac{5(5-3)}{2}=\frac{5\times2}{2}=5\)। ट्रिक: विकर्णों का सूत्र \(n(n-3)/2\) प्रयोग करें।
Community answers
Votes use a first-party browser cookie to help prevent repeat votes. Votes indicate helpfulness, not correctness.
No community answers yet. Be the first to share how you solved it.
Share your solution
Help other learners understand the steps. Your answer will be reviewed before it appears.