Wiki User
∙ 15y agoWell its still a 2d because its like a normal square
Wiki User
∙ 15y agohexagon
There is no specific name, except in the case of a triangle: scalene. You should not call it simply an irregular polygon, because a regular polygon implies that ALL sides are equal and ALL angles are equal. So a rhombus, where all four sides are equal, is still irregular.
A better name for "corners" would be angles, but the shape's name would be a hexagon
A shape with 7 sides is a heptagon
DFN: we call a triangle equilateral if all sides of the triangle are the same length DFN:we call two triangles similar if corresponding angles are equal, and corresponding sides are proportional. First show that all corresponding sides are proportional: Consider a equilateral triangle with side lengths 1, all other equal lateral triangles sides can be expressed as S*(1), where S is some scalar. Hence all equilateral triangles sides are proportional to each other. Next, show that all corresponding angles are equal: The angle between two sides of a triangle is related to the length of the sides. These relationships are called sin, cos, and tan. Knowing that the cos(x), where x is one of the angles in the triangle, is the adjacent divided by the hypotenuse we see that cos(x)=(1/2)c/a, since a = c (because its equal lateral) we are left with cos(x)=(1/2) which means x = 60 degrees. this can be applied to all three angles, which shows that all three angles are 60 degrees. / \ / | \ a / | \ b /__ |__\ c We have now shown that all equal lateral triangles are similar because they all have proportional sides, and they all have equal angles.
a rhombus
triangle isosceles triangle
A pentagon. If the sides and angles are equal it is a REGULAR pentagon.
A polygon with four equal angles and sides is a square.
You just call it a decagon. If all the angles and sides are equal then it's a regular decagon. If not, it's an irregular decagon.
Rhombuses are paralellograms. Also, they're what you might call a diamond.* * * * *Not a particularly useful answer since a rectangle is also a parallelogram. The two differences are:all the sides of a rhombus are of equal length while in a rectangle opposite sides are equal but adjacent sides are usually not equal (if they are, then the shape is a square);all the angles of a rectangle are right angles while in a rhombus opposite angles are equal but adjacent angles are usually not equal (if they are, then the shape is a square).
A shape with five sides would be a pentagon, but a shape can not have 5 right angles. Squares and Rectangles are both shapes with 4 sides and 4 right angles. They are the only shape with the same amount of right angles as there is sides.
A regular shape.
hexagon
A decagon.
You would call it an irregular polygon. Afraid not. There is no specific name, except in the case of a triangle: scalene. You should not call it simply an irregular polygon, because a regular polygon implies that ALL sides are equal and ALL angles are equal. So a rhombus, where all four sides are equal, is still irregular.
It is an irregular shape