Find the number of diagonals of a Polygon Heptagon ACT Math Problem

#shorts #geometry

Find the number of diagonals for a heptagon and any convex polygons.

[amrokhalid]

do we still have this on the digital sat

[alexzuma.]

there are n-3 possible diagonals from one corner of the n-sided polygon

[aaaaaaaaa]

Or literally just use the formula d = n(n-3)/2? Granted that's what you did but 0 reason to draw, imagine if the question was about an icosahedron

[DIIVHIYAASRIAPCHANDRASEGARANMo]

Wait an second 7-4 is 3 right and then u will times with 7...it should be answer 21 how did u get 28