Concave polygon A concave polygon has one or more angles larger than 180º. LicenseCC-BY-SA, GeoGebra Terms of Use […]
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Convex polygon
Convex polygon A convex polygon is a polygon, no angles larged than 180°. Examples: a convex polygon: a regular pentagon. convex pentagon convex hexagon LicenseCC-BY-SA, GeoGebra Terms of Use […]
Coordinate plane
Coordinate plane A coordinate plane (Cartesian plane) is a plane formed by a horizontal line (an axis) and a vertical line (another axis) that intersect at a point called the origin. A plane containing two perpendicular axis (x and y) intersecting at a point called the origin (0,0).A point position is denoted using pairs of coordinates (x; y) , e.g. A(3, 1). The […]
Plane, plane shapes
Plane, plane shapes Plane shapes are two-dimensional geometric figures: they have length and width but they have no depth. Plane shapes exist on a flat surface, known as a plane. Here are some plane shapes examples: […]
Perpendicular
Perpendicular Perpendicular lines are straight lines that form the right angle (90° angle) with each other. See some examples of perpendicular lines, below: […]
Perimeter
Perimeter The perimeter of a 2D shape is the total length of all its sides. For example, a rectangle has four edges, so its perimeter is the total of those four edges added together. […]
Percent, percentage
Percent, percentage Percent means “for every 100 parts“. The word comes from the latin phrase per centum which means per one hundred. Percentage means a part per hundred. It can be expressed in decimal form and in fraction form too. A percentage of a number is symbolized by writing: Examples: If we say 30%, it means 30 out […]
Pentagon
Pentagon A pentagon is a type of polygon that has five sides and five angles. pentagon Different types of pentagones […]
Pair
Pair A set of two numbers or objects linked in some way, is called a pair. Examples: […]
Pyramid
Pyramid The pyramid is a three-dimensional figure with several flat faces that consists of: Base: A simple polygon located at the bottom of the pyramid. It can be a triangle, square, pentagon or any other polygon with straight sides. Depending on the base, they can be regular pyramids (the sides of the base polygon have […]
