true
True
Polygons that have equal side lengths are regular as for example an equilateral triangle
Their perimeters are in the same ratio.
No. Parallel means they are side by side and have the same distance continuously between them but they might be different lengths and therefore not the same. A trapezoid has two parallel sides of unequal lengths.
base (legs are the two congruent sides)
True
No, the definition of congruent polygons is that all corresponding SIDES are of equal length. All corresponding angles as well.
similar
They are called regular polygons
Yes, those polygons which have angles of 90 degrees and equal side lengths are called squares; those with uneven side lengths are called rectangles.
true
a double triangle
Trapezoids have unequal side lengths.
Similar polygons have the same size angles, but the side lengths are proportionally different, thereby the area is different. Congruent polygons have the same size angles, the side lengths, thereby the area is the same.
No! Regular polygons must have equal side lengths and equal angles.
All regular polygons are equiangular because their side lengths are equal.
Polygons that have equal side lengths are regular as for example an equilateral triangle