wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Tick (✓) the correct answer:
How many diagonals are there in an octagon?
(a) 8
(b) 16
(c) 18
(d) 20

Open in App
Solution

(d) 20

​For a regular n-sided polygon:
Number of diagonals =: nn-32
For an octagon:

n=888-32=402=20

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Properties of Special Parallelograms
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon