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Facts about Plane Shapes. Plane shapes, also known as 2D shapes, are flat figures that exist in a two-dimensional space, with length and width but no depth. A polygon is a closed plane figure with straight sides. Examples of polygons include triangles, quadrilaterals, pentagons, hexagons, and so on. Circles are another type of plane shape.
- Plane Figure
A plane figure is a flat shape. It does not have depth or...
- Plane Figure
The perimeter or distance around the outside, expressed in linear units; and the area or space enclosed by the perimeter expressed in square units. The perimeter of a square with 7 inch sides is 4 × 7 or 28 inches. The area of the same square is 7 × 7 or 49 square inches – written in². Three Dimensional Figures are called solids.
- What Is Plane Geometry?
- How to Identify A Plane in Geometry?
- Basic Terminologies in Plane Geometry
- Angles in Plane Geometry
- Types of Angles
- Plane Geometry Examples
- Circle in Geometry
- Conclusion
- Solved Examples
Plane geometry deals in flat shapes that you can draw on a piece of paper, such as squares, circles, and triangles. Solid geometry deals in three-dimensional solid shapes that exist around us, such as spheres, cones, and cubes. Suppose you have to draw Earth on a piece of paper. How would you do that? A simple way would be to draw a circle to repre...
In geometry, a plane is a flat surface of two dimensions. It extends endlessly and has no thickness. You can think of a piece of paper or the surface of a wall as a part of a geometric plane. The flat shapes in plane geometry are known as plane figures. We can measure them by their length and height or length and width. But they don’t have any dept...
When it comes to plane geometry, we need to know about a few terminologies, such as: 1. Point 2. Line
What is common between the edge of a table, an arrowhead, and a slice of pizza? They are all examples of angles we see around us. An angle forms when two rays meet at an endpoint. The rays are the sides of an angle, while the common endpoint is the vertex. Angles are measured in degrees (°).
Acute Angle: An acute angle (or sharp angle) measures between 0° and 90°. Right Angle: A right angle measures 90°. Obtuse Angle: An obtuse angle measures between 90° to 180°. Straight Angle: A straight angle measures 180°. Reflex Angle: A reflex angle measures between 180° to 360°. Complete Angle: A complete angle measures 360°.
Polygon A polygon is a closed shape formed by straight line segments. It is a two-dimensional figure with a finite number of sides. The sides form the edges of a polygon. The meeting point of the two sides is known as a vertex. A polygon is named depending on its number of sides. It is usually denoted by n-gon, where n is the number of sides. Every...
A circle is a closed round figure without any edges or corners. It is a two-dimensional curved shape. The word circle comes from the Greek word kirkos, which means ring or hoop. The distances between the center of the circle and every point on the circle are the same. This distance is the radius of the circle. Fun Fact: Flatlandis a fictional story...
Knowledge of plane geometry is essential for measuring lines, angles, and surfaces. It lays the foundation for learning solid geometry.
Example 1: Is the figure below a line or a line segment? Solution: The given figure is a line. Even though it has two defined points A and B, the two arrows indicate that it extends endlessly in both directions. This shows it is a line. Example 2: Which of the following figures is not a polygon? Solution: Fig: d is not a polygon. It is a curved sha...
Plane figures are two-dimensional shapes that lie flat on a single plane and are defined by their boundaries. They include various geometric shapes such as circles, triangles, squares, and rectangles, each characterized by specific properties such as sides, angles, and area. Understanding plane figures is essential when calculating area, as the measurement of space within these figures is ...
A plane figure is a flat shape. It does not have depth or thickness. Plane figures only have two dimensions (length and width). Thus, they are also known as 2D figures or two-dimensional shapes. Some common examples of geometric plane figures are squares, rectangles, circles, triangles, etc. A plane figure lies all within a single plane.
Observe the below figure, to understand the different shapes that relate to geometric shapes. Solved Examples. Q.1: Find the open figure from the following. Solution: Correct answer is figure D. All other figures are closed figures where both the start and endpoints are the same. Q.2: How many sides does a decagon have? 8; 9; 10; 11
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What is a geometric figure?
Geometric figures are often classified as space figure, plane figure, lines, line segments, rays, and points depending on the dimensions of the figure. Space figure. A space figure is a three-dimensional geometric figure, or a figure that has length, width and height. It often occupies space and has volume when the figure is closed. Example
