en.wikipedia.org/wiki/Congruence_(geometry)

In geometry, two figures or objects are congruent if they have the same shape
and size, or if one has the same shape and size as the mirror image of the other.
More formally, two sets of points are ...

www.reference.com/math/polygon-called-sides-congruent-f73b5a973cb426f2

A polygon that has all sides congruent is called a "regular polygon." Regular
polygons must also have all angles congruent, which is a side effect of having ...

www.reference.com/math/parallelogram-sides-congruent-called-5fe517c4ac5bb0ac

A parallelogram with all sides congruent is called a rhombus. ... What is a
polygon and a quadrangle when all sides are the same length and there are no
right ...

www.sparknotes.com/math/geometry1/polygons/terms.html

Congruent Polygons - Polygons whose sides are all congruent. Consecutive ...
Convex Polygon - A polygon whose interior angles are all less than 180 degrees.

www.mathopenref.com/congruentpolygons.html

Polygons are congruent when all corresponding sides and interior angles are ...
When the polygon is 'flipped over' above, this operation is called reflection.

www.quora.com/What-is-a-7-sided-polygon-called

Aug 16, 2015 ... It's called a heptagon (from Greek) or, less commonly, a septagon (a clumsy
hybrid of ... What are some polygons with all sides congruent? Are polygons
always ... A heptagon is a polygon with seven sides and seven angles.

www.math.com/school/subject3/lessons/S3U2L1DP.html

"Tri" means "three," so the simplest polygon is called the triangle, because it ... A
regular polygon is a polygon with all angles and all sides congruent, or equal.

www.ck12.org/book/CK-12-Middle-School-Math-Concepts-Grade-7/section/8.11/

Dec 2, 2015 ... A triangle with three congruent sides is called an equilateral triangle. ... Any
polygon that does not have all congruent sides is an irregular ...

www.freemathhelp.com/feliz-polygons.html

Each corner of a polygon where two sides intersect is called a vertex of the ...
polygon because all sides have the same length and all angles measure the
same: ...

www.montereyinstitute.org/courses/DevelopmentalMath/COURSE_TEXT2_RESOURCE/U07_L2_T1_text_final.html

As with triangles and other polygons, quadrilaterals have special properties ...
These quadrilaterals are called parallelograms They take a variety of shapes, but
one classic example is shown below. ... All four sides of a rhombus are congruent
.