A pentagon has 5 diagonals.
Five. (Even a non-regular pentagon has 5 diagonals).
Pentagon
a Pentagon has 5 diagonals, they form a star inside the polygon
A polygon with n vertices has n*(n-3)/2 diagonals. Therefore, a pentagon, which has 5 vertices, has 5*(5-3)/2 = 5 diagonals.
a semi circle
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Five. (Even a non-regular pentagon has 5 diagonals).
no.
Pentagon
a Pentagon has 5 diagonals, they form a star inside the polygon
A polygon with n vertices has n*(n-3)/2 diagonals. Therefore, a pentagon, which has 5 vertices, has 5*(5-3)/2 = 5 diagonals.
a semi circle
Joining straight line of any two alternate vertices.
triangle and trrapezium
Pentagon GIANT with diagonal AG parallel to side NT
You need to draw one diagonal. Look at the hexagon and then look at a pentagon. The triangle should stand out pretty well then.
A regular pentagon can always be drawn through any two given points with those two points as any two vertices of the pentagon. (Diagonals of a pentagon connect two vertices which are not next to each other.)