Question

does a convex nonagon has 27 diagonals?

Answer 1

nonagon = how many sides ?

Answer 2

9=nona?

Answer 3

but what does convex mean?

Answer 4

convex means all interior angles are < 180

Answer 5

i think we dont have to use that info, convex/concave, it will have same # of diagonals

Answer 6

so it has 27 diagonals?

Answer 7

did u use this formula :

9(9-3)/2

Answer 8

?

Answer 9

damn geometry is hard sorry if your having a hard time with me

Answer 10

noo im enjoying doing these wid u, actually i like geometry and i did these very long time back, now its nice refresh :)

Answer 11

so 54/2=27

Answer 12

thats right !

Answer 13

i have another question

the perimeter of a regular decagon is 200 cm. Each side measures 20 cm

Answer 14

regular decagon means, all 10 sides are congruent

Answer 15

so 10/200? or should i use the formula?

Answer 16

since each side is 20cm,
Perimeter = 10 * S = ?

Answer 17

so its 200 10x20

Answer 18

10/200 doesnt give meaning ful info,

Answer 19

thats right :)

since one side is 20cm
10 sides will be 10*20 = 200

so perimeter = 200

Answer 20

but it can still give the answer?

Answer 21

this question is a True/False quesiton right ?

Answer 22

it doesnt ask us to calculate anything,

Answer 23

yes

Answer 24

so its true

Answer 25

can i ask more questions?

Answer 26

sure ask :)

Answer 27

ill post another question ill close this

Answer 28

k