Adjecent Angles
If you mean pentagon then the answer is 5.
If two opposite sides are congruent in length and direction then they are parallel sides. THat would mean the other two sides are congruent making 4 parallel sides or a parallelogram
When you say "sides", do you mean faces or edges? A dodecahedron has 12 faces and 30 edges.
I thnk you mean a rhombus, four equal sides, not square or recrangle
Yes because the 4 sides of a rhombus are of equal lengths
adjacent means next to or bordering on
Supplementary angles
hypotenuse*hypotenuse=opposite side*opposite side+adjecent side*adjecent side
Any polygon must have at least three sides. So a shape with only one pair of adjacent sides must be lenticular (shaped like a lens) else it is some very odd shape.
wavelength
If the two lines have a common ponts.
Angles that share a common end point and a common line segment but no common interior point (two angles that are next to each other)
Adjecent Angles
adjecent
adjecent angles
do not they are 2 angle with a common side and vertics that do not otherwise overlap.