The answer is zero because it has no flat sides
An isosceles triangle has no parallel sides but it does have 2 sides of equal lengths
cylinder
A circle has four different ideas to sides. -Inside and Outside (two) -No sides (zero) -Disk idea, top and bottom (two)
There are zero diagonals in a circle because a circle has no sides no vertices or it doesn't have a flat surface so zero.
ZERO sides but2 circular faces
zero
zero
The answer is zero because it has no flat sides
Zero
zero
Zero
An isosceles triangle has no parallel sides but it does have 2 sides of equal lengths
A regular pentagon has zero perpendicular sides. If it is irregular, it could have as many as 2 or 4 perpendicular sides.
Zero
it has zero edges and sides and faces
A trapezoid may have zero or one pair of congruent sides.