21 terms

# Geometry Honors Chapter 8 & 9

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geometric mean
a/x = x/b x is in this position
Pythagorean Triple
the lengths of three sides of a right triangle
trigonometry
triangle measurement
center
the given point
chord
a segment whose endpoints are on the circle
secant
a line that contains a chord
diameter
a chord that contains the center of the circle
tangent
is a line in the plane of a circle that intersects the circle in exactly one point
point of tangency
the point in which the tangent intersects the tangent
sphere
with center O and radius r is the set of all points in space at a distance r from point O
concentric circles
circles with the same center
common tangent
a line that is tangent to each of two coplanar circles
central angle of a circle
an angle whose vertex is the center of the circle
(equal thier arcs)
minor arc
less than 180 degrees. (2 letters)
major arc
> 180 degrees (3 letters)
semicircle
= 180 degrees (3 letters0
inscribed angle
an angle whose vertex is on the circle
circle
set of all points in a plane at a given distance from a given point in that plane.
tangent circles
coplanar circles that are tangent to the same line at the same point; can be internally or externally tangent