# Flashcards - Praxis I Math: Circles

Flashcards - Praxis I Math: Circles
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unit circle
In mathematics, a unit circle is a circle with a radius of one
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midpoint
In geometry, the midpoint is the middle point of a line segment
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surface area
The surface area of a solid object is a measure of the total area that the surface of the object occupies
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area
Area is the quantity that expresses the extent of a two-dimensional figure or shape, or planar lamina, in the plane
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area
Area is the quantity that expresses the extent of a two-dimensional figure or shape, or planar lamina, in the plane
surface area
The surface area of a solid object is a measure of the total area that the surface of the object occupies
midpoint
In geometry, the midpoint is the middle point of a line segment
unit circle
In mathematics, a unit circle is a circle with a radius of one
chord
A chord, in music, is any harmonic set of usually three or more notes that is heard as if sounding simultaneously
circle
A circle is a simple closed shape in Euclidean geometry
diameter
In geometry, a diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circle
tangent
In geometry, the tangent line to a plane curve at a given point is the straight line that \"just touches\" the curve at that point
tangent to a circle
In Euclidean plane geometry, a tangent line to a circle is a line that touches the circle at exactly one point, never entering the circle's interior

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