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May 28, 2024 · Area is a quantity that expresses the extent of a two-dimensional figure or shape or planar lamina in the plane. Lamina shapes include 2D figures that can be drawn on a plane, e.g., circle, square, triangle, rectangle, trapezium, rhombus, and parallelogram. A polygon is a two-dimensional shape that is formed by straight lines. Examples of polygons
Aug 16, 2024 · Properties of 2D Shapes. 1. Circle. A circle is a perfectly round shape characterized by all points on the perimeter being equidistant from a single point in the center. Circles are unique among 2D shapes in having no straight edges or vertices. They are known for their infinite lines of symmetry.
- Circles, Ellipses, Parabolas and Hyperbolas
- Two-Dimensional Curved Shapes
- Parabolas, Hyperbolas and The Relationship Between Curved Shapes
Our page on Polygonscovers shapes made with straight lines, also known as ‘plane shapes’. This page explains more about shapes with curves, especially two-dimensional ones. Two-dimensional curved shapes include circles, ellipses, parabolas, and hyperbolas, as well as arcs, sectors and segments. Three-dimensional curved shapes, including spheres, cy...
Circles
Probably the most common two-dimensional curved shape is a circle. In order to work with circles (and other curved shapes) in geometry it is important to understand the key properties of a circle: 1. A line straight across the centre of a circle is the diameter. 2. Half of the diameter is the radius. 3. The line around the edge of a circle is the circumference. Any point on the circumference of a circle is exactly the same distance away from the centre of the circle as any other point on the...
Sectors and Segments
Sectors and segments are 'slices' of a circle. Sectorsare shaped like a slice of pizza, with a curved edge and each straight side the same length as the radius of the circle, or pizza, from which it was cut. Pie charts are made up of a number of sectors relating in size to the data they show. A sector can be any size, however a sector that is half a circle (180°) is called a semicircle, while a quarter circle sector (90°) is called a quadrant. A segment is the curved part of a sector, the par...
Arcs
A section of the circumference of a circle is called an arc. To calculate the length of an arc between points A and B, you need to know the angle at the centre between points A and B. θ (theta) is the symbol used to represent this angle subtended by A and B. In our example, we are using degrees for θ, but it is also possible to use radians. You also need to know the radius (r) of the arc. As there are 360° in the whole circle, the length of the arc is equal to the central angle (θ) divided by...
Parabolas and Hyperbolas are more forms of curved shapes, but they are more complicated to define than circles and ellipses. They are closely related to each other and to circles and ellipses, because they are all conic sections, i.e. shapes that are formed by slicing through a cone with a flat plane. The characteristics of conic sections have been...
Rectangle. Pentagon. Octagon. The basic types of 2d shapes are a circle, triangle, square, rectangle, pentagon, quadrilateral, hexagon, octagon, etc. Apart from the circle, all the shapes are considered as polygons, which have sides. A polygon which has all the sides and angles as equal is called a regular polygon.
- A 2d shape is a two-dimensional shape that is defined in horizontal and vertical axes (x-axis and y-axis). 2d shapes are flat figures that have onl...
- The basic 2d shapes are triangle, circle, square, rectangle, pentagon, hexagon, etc.
- A cylinder is a 3d shape that has two parallel bases and lateral sides. The two bases are circular in shape.
- 2d shapes do not have height or thickness but 3d shapes have height.
- A pentagon is a 2d shape that has five sides.
- A line is a one-dimensional shape.
- There are many examples in real-life we can see for 2d shapes, such as: A ring (Circle) A rectangular plot A square shape plate Tiles A piece...
A 2D shape has no thickness or depth. Example 3: Match the 2D shape with its property. (i) It has no corners and edges. (ii) It has one pair of opposite sides parallel to each other while the other two sides are non-parallel. (iii) It is a closed figure with three straight sides. (iv) Each of its angles measures 90°.
Here are the different types of mathematical curves: 1. Upward Curve: A curve that turns in the upward direction is called an upward curve. It is also known as a concave upward or convex downward curve. 2. Downward Curve: A curve that turns in the downward direction is called a downward curve since it is curved downward.
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Circles. A circle is a 2D shape with one curved side and no angles. Circles are used to represent planets, the sun, and the moon. Circles also exist in the shape of a coin, the pupil in your eye, the side of a lollipop, or a yo-yo. 4. Triangles. A triangle is a 2D shape that has three sides and three angles.
