What are the terms of circles?
What are the terms of circles?
This section of Revision Maths defines many terms in relation to circles, including: Circumference, Diameter, Radius, Chord, Segment, Tangent, Point of contact, Arc, Angles on major and minor arcs, Angle of Centre and Sectors. Circumference: The circumference of a circle is the distance around it.
What is the line under a circle called?
A tangent is a straight line outside the circle that touches the circumference at one point only. A segment is the area enclosed by a chord and an arc (it looks similar to the segment of an orange or grapefruit). A sector is the area enclosed by 2 radii (radius) and an arc (It looks like a slice of cake or pizza).
What is the line in a circle called?
A line segment that crosses the circle by passing through its center is called a diameter. The diameter is twice the length of the radius. In the circle above, AC is a diameter of the circle. A chord is a segment that also has endpoints on the circle, but does not need to cross through the center.
What word describes line Z?
Q. What word describes line Z? Transversal.
Is Joule a math word?
The unit of energy, work and heat. Equal to the work done (or energy transferred) by a force of one newton acting over one meter in the direction of the force.
What do you need to know about circle geometry?
Chord — a straight line joining the ends of an arc. Circumference — the perimeter or boundary line of a circle. Radius (\\ (r\\)) — any straight line from the centre of the circle to a point on the circumference. Diameter — a special chord that passes through the centre of the circle.
Which is the best definition of a circle?
Circle – A geometric figure composed of points that are equidistant from a given point. Circle Segment – The region within a circle bounded by a chord of that circle and the minor arc whose endpoints are the same as those of the chord. Circumscribed Polygon – A polygon whose segments are tangent to a circle.
What do you call the perimeter of a circle?
The following terms are regularly used when referring to circles: Arc — a portion of the circumference of a circle. Chord — a straight line joining the ends of an arc. Circumference — the perimeter or boundary line of a circle.
Which is true about the radius and diameter of a circle?
Radius (\\ (r\\)) — any straight line from the centre of the circle to a point on the circumference. Diameter — a special chord that passes through the centre of the circle. A diameter is a straight line segment from one point on the circumference to another point on the circumference that passes through the centre of the circle.