A square has all 4 sides the same length and its angles measure the same as well. A rhombus has all 4 sides the same length as well and the angles measure the same as well too.
You have described an equilateral triangle.
A scalene triangle is a shape that has no sides or angles with the same measurements.
A rectangle is the only such shape. Not sure about the "little" right angles: all right angles are of the same measure.
Triangle
A shape with five angles and five sides that do not all measure the same is an irregular pentagon. A regular pentagon has all five sides and angles the same size.
A square has all 4 sides the same length and its angles measure the same as well. A rhombus has all 4 sides the same length as well and the angles measure the same as well too.
isosceles triangle has two sides equal in length and two angles of the same measure;
You have described an equilateral triangle.
A hexagon has all six sides in equal length and all angles in equal measure.
A rhombus has four sides of the same length, and a rectangle has four angles of the same measure. A square has equal sides and equal angles.
A scalene triangle is a shape that has no sides or angles with the same measurements.
The sides are the same length and internal angles the same
A rectangle is the only such shape. Not sure about the "little" right angles: all right angles are of the same measure.
A polygon with all sides the same length and all angles the same measure is called a regular polygon. Examples include triangles, squares, pentagons, and hexagons. When the number of sides approaches infinity, the shape of a circle is formed.
Triangle
A plane shape is regular if each of its sides is of the same length AND each of its angles is of the same measure. An octagon can be regular or irregular.