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Mathematics 7 Online
OpenStudy (anonymous):

https://media.education2020.com/evresources/2091266_da2e4fa2-0ed9-43a9-b9ac-722ffdeb6581.png Which of these figures are not polygons?

OpenStudy (anonymous):

Polygons must be 'closed', so which of those isn't closed?

OpenStudy (anonymous):

b?

OpenStudy (math_genius123):

it should be B. cuz a polygon has to be a closed figure

OpenStudy (anonymous):

well the choices are A. A, B B. C, D C. A, C, D D. C

OpenStudy (anonymous):

Yep, B! You got it. B isn't a polygon, it's just a squiggle :)

OpenStudy (math_genius123):

its A,B den

OpenStudy (anonymous):

thx guys!<3

OpenStudy (anonymous):

According to http://www.mathsisfun.com/geometry/polygons.html "A" would be a "complex polygon".

OpenStudy (math_genius123):

just remember a polygon is a plane figure with at least three straight sides and angles, and typically five or more.

OpenStudy (anonymous):

arrighty lol.

OpenStudy (anonymous):

im havin a hard time with one more actually! well i just wanna know if i got it correct

OpenStudy (math_genius123):

ok go for it

OpenStudy (anonymous):

https://media.education2020.com/evresources/2091325_penrose_tiling.png Does the shape have rotational symmetry? If so, what is the angle of rotation, rounded to the nearest degree? A. no, 0 f B.yes, 45 f C.yes, 72 f D.yes, 60 f

OpenStudy (anonymous):

is it..A?

OpenStudy (math_genius123):

damn this one got me

OpenStudy (anonymous):

xD its fine if ur having a hard time :) i think i got it

OpenStudy (anonymous):

ill rely on this brain of mine for once!

OpenStudy (math_genius123):

ok i just didnt study this one good

OpenStudy (math_genius123):

just lookin at it m thinkin A. i might be wrong

OpenStudy (anonymous):

i think so too lol, thx genius!

OpenStudy (math_genius123):

np oh and sorry bout my words i just talk like dat all da time so yeah

OpenStudy (anonymous):

lmao im totally fine with that xD

OpenStudy (math_genius123):

kk

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