The answer depends on what you are summing: the lengths of sides, interior angle, exterior angles.
Pentagons are 5 sided shapes that have 5 angles and 1of them equal 108 degrees
((2 x 5) - 4) x 90 ie 540o
what is the perimeter of a pentegon?
A pentagon has no right angles at all. Each pentagon has 5 equal sides, which results in internal angles of 108° each. A right angle must be 90°, which is too small to be part of a pentagon.
540 degrees
no, pentagons don't have parallel sides or right angles.
The answer depends on what you are summing: the lengths of sides, interior angle, exterior angles.
72 because you divide 360 by 5.
Pentagons are 5 sided shapes that have 5 angles and 1of them equal 108 degrees
((2 x 5) - 4) x 90 ie 540o
A pentagon can be regular. But, if one of its sides is of a different length, or one of its angles is of a different measure then it is irregular.
It could be an irregular 5 sided pentagon providing that its 5 inteior angles add up to 540 degrees
what is the perimeter of a pentegon?
A pentagon has no right angles at all. Each pentagon has 5 equal sides, which results in internal angles of 108° each. A right angle must be 90°, which is too small to be part of a pentagon.
The Greek prefix "penta-" means five, so a pentagon has five angles and five sides. If it had any other number of sides it would not be called a pentagon!
No, a pentagon is not a parallelogram.