![]() Let’s take a look at some of the polygons and define their characteristics. Some common types of polygons are triangle, square, rectangle, pentagon, hexagon, etc. The properties and kinds of polygons differ depending on the number of sides it has. All circles have 360 degrees of angle measure.The measure of a diameter is twice the measure of a radius. It is a line segment that runs across the circle through its center. The diameter of a circle is the longest possible line segment that can be drawn in a circle.The radius is the distance from the center of the circle to any point on the circumference.The circumference is equal to the length of the wire, which in this case, is 15 cm. Assume a string with a length of 15 cm, which is bent to form a circle. The distance around a circle can be defined as its circumference. ![]() The central point is the point located at the center of a circle.The parts of a circle are the central point, radius, diameter, and circumference. We can say that a 2-dimensional shape is a circle if it a closed, completely rounded shape. The image below shows how a regular 2D shape differs from an irregular 2D shape. If all of the sides of a 2D object are of unequal length and all angles are of unequal measure, it is considered irregular. If all of the sides of a 2D object have the same length and all interior angles are the same, it is said to be regular. When classifying a 2D shape, we need to consider the measure of the lengths of each side and its interior angles. We can classify a 2D shape as a regular and irregular shape. How can we classify a 2-dimensional geometric shape? Polygons are named and determined based on the number of sides, such as triangles, quadrilaterals, pentagon, hexagon, etc. It is made of line segments wherein each of which intersects with exactly two other line segments. PolygonĪ polygon is a closed and flat figure on a plane with straight sides. Thus, it does not meet the criteria for being a polygon. However, a circle is not a polygon, and will not be a polygon since a circle is formed by a single curved line and not from line segments. ![]() Students sometimes confuse a circle as a polygon. CircleĪ circle is a closed 2D shape whose points are always the same distance from the central point. We can classify a 2-dimensional shape depending on the number of sides, how it is formed, and by its lengths and widths. If your volume is concave you'll have multiple discrete intersection shapes, and so you need to repeat this process until all edges have been examined.What are the different types of 2-dimensional geometric shapes? Note that this process assumes that the face polygons are convex, which in your case they are. You've built an ordered list of edges that intersect the plane - it's trivial to linearly interpolate each edge to find the intersection points, in order, that form the intersection shape.
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