An equilateral triangle and a square.
You mean trapezoid? _........-------- \ / \ / \ /_____________.\
You mean ghetto?
If x and y are two positive numbers, with arithmetic mean A, geometric mean G and harmonic mean H, then A ≥ G ≥ H with equality only when x = y.
Whatever you want it to mean
Not normally
All regular polygons.
An equilateral triangle and a square.
An irregular polygon need not be equiangular.
60 degrees.
Equilateral and Equiangular triangle
If by equilangular you mean all angles are the same, then no - the sum of the angles of a triangle must be 180o, so if all 3 are the same they must each be 60o and the triangle is called equilateral. However, an obtuse isosceles triangle is possible as the equal angles are the other two angles to the obtuse angle.
A polygon can be equilateral but not always equiangular. Some examples of this are rhomboids and other polygons like pentagons and hexagons.
No because a parallelogram is a quadrilateral that has 4 sides but any triangle has only 3 sides.
No because it has 2 equal interior acute angles and 2 equal interior obtuse angles but its 4 sides are equal in length
Triangles can't have two sides, but a triangle with three congruent sides is a equilateral or three congruent angles in a triangle is equilangular.
If the triangle is equilangular, then all angles are 60 degrees: 180/3 = 60 If the measures of two angles are given, you can discover the 3rd one by subtracting the sum of the two angles from 180.