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Lines. A line that "just touches" the circle as it passes by is called a Tangent. A line that cuts the circle at two points is called a Secant. A line segment that goes from one point to another on the circle's circumference is called a Chord. If it passes through the center it is called a Diameter. And a part of the circumference is called an Arc.
A two dimensional (2D) shape is made of lines. Sometimes the lines are curved and sometimes the lines are straight. The lines join up to make a shape like these.
Nov 4, 2024 · Curved shapes are composed of continuous curved lines. For example, a circle, ellipse and oval are all curved shapes. Curved shapes have no fixed sides or vertices, and have a radius of curvature at each point around the shape. Curved shapes contrast with straight shapes, which are shapes composed of straight line segments. Straight shapes have ...
Inscribed Shapes. Many geometry problems deal with shapes inside other shapes. For example, circles within triangles or squares within circles. The inner shape is called "inscribed," and the outer shape is called "circumscribed." When a circle is inscribed inside a polygon, the edges of the polygon are tangent to the circle.--
Secant-A straight line cutting the circle at two points. It is also called an extended chord. Tangent-A coplanar straight line touching the circle at a single point. See the figure below-representing the centre, chord, diameter, radius, secant and tangent of a circle. Radius of Circle (r) A line segment connecting the centre of a circle to any ...
A circumscribed shape means a shape drawn around another shape such that it is touching it at points (vertices) but not cutting it. When a shape is restricted within another shape and there is no way for the inside figure to pass through the outer figure, then we say that the inner shape is circumscribed by the outer shape. The outer shape ...
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Let’s take a closer look at some of those invisible lines that run through the interior of a circle and learn how you can use them to find important measurements, like the circle’s area! Diameter The diameter of a circle measures from one side of the circle, through the center, and to the other side.
