If all the angles are equal and acute, it will be an equilateral triangle.
The shape of the twelfth figure is a dodecagon. A dodecagon is a polygon with twelve sides and twelve angles. It is a regular dodecagon if all its sides and angles are equal. The interior angles of a regular dodecagon measure 150 degrees each.
We need more information ! Any regular polygon has equal angles !
For a figure to be regular, all its sides and angles must all be congruent. So if a pentagon is regular, all of its sides and angles are equal to each other.
The figure is a Regular polygon.
There is no limit to the number of obtuse angles a figure can have. A regular n-gon has n obtuse angles where n is any positive integer greater than 4.
Regular Hexagon
A regular polygon
Any closed figure that is not entirely composed of straight sides, such as an ellipse or a circle.
The shape of the twelfth figure is a dodecagon. A dodecagon is a polygon with twelve sides and twelve angles. It is a regular dodecagon if all its sides and angles are equal. The interior angles of a regular dodecagon measure 150 degrees each.
We need more information ! Any regular polygon has equal angles !
For a figure to be regular, all its sides and angles must all be congruent. So if a pentagon is regular, all of its sides and angles are equal to each other.
The figure is a Regular polygon.
It is a regular polygon.
There is no limit to the number of obtuse angles a figure can have. A regular n-gon has n obtuse angles where n is any positive integer greater than 4.
All regular polygons with an even number of angles. All the angles of polygons with an odd number of angles are also equal but there are no "opposite" angles.
Whether it is a regular or irregular octagon does not matter. An octagon is, by definition, a 2-dimensional figure with eight sides, and therefore with eight angles. A regular octagon will have eight equal angles and an irregular octagon will have eight angles some of which are not equal to the others.
if a figure is a square, then it is a regular quadrilateral