Section 1
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semicircle
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Last updated
6 years ago
Date created
Mar 1, 2020
Cards (69)
Section 1
(50 cards)
semicircle
an arc whose measure is 180 degrees
perpendicular
Two lines that intersect to form right angles
Alternate interior angles
angles between 2 lines and on opposite sides of a transversal
linear pair
A pair of adjacent angles whose noncommon sides are opposite rays.
Point
an exact location in space
complimentary angle
Angles that add up to 90 degrees
Medians
a segment whose endpoints are a vertex and the midpoint of the opposite side
orthocenter
The point of concurrency of the altitudes of a triangle
radius
The distance from the center of a circle to any point on the circle
supplementary angle
Two angles whose sum is 180 degrees
angle bisector
a ray that divides an angle into two congruent angles
secant
A line that intersects a circle in two points
diameter
a chord that passes through the center of the circle
Midpoint
A point that divides a segment into two congruent segments
minor arc
An arc of a circle whose measure is less than 180 degrees.
straight angle
an angle that measures 180 degrees
reflex angle
Between 180 and 360 degrees
circumcenter
the point of concurrency of the perpendicular bisectors of a triangle
collinear
points that lie on the same line
altitude of a triangle
the perpendicular segment from a vertex to the opposite side
incenter
the point of concurrency of the angle bisectors of a triangle
line
an infinite collection of points that extends forever in 2 directions
circumscribed circle
a circle with an inscribed polygon
centroid
The point of concurrency of the medians of a triangle
circle
The set of all points in a plane that are the same distance from a given point called the center
central angle
an angle whose vertex is the center of the circle
ray
a part of a line that starts at an endpoint and extends forever in one direction
acute triangle
A triangle with 3 acute angles
Polygon
A closed plane figure made up of line segments
major arc
An arc of a circle whose measure is greater than 180 degrees but less than 360 degrees
segment bisector
a line, ray, or segment that divides a segment into two congruent segments
inscribed circle
a circle in which each side of the polygon is tangent to the circle
obtuse angle
An angle that measures more than 90 degrees but less than 180 degrees
Postulate
a statement that is accepted as true without proof
obtuse triangle
a triangle with one obtuse angle
equilateral triangle
a triangle where all sides are of equal length and all angles are congruent
the measure of an angle
The amount of rotation needed to rotate one of the rays about their shared point so that it lies on top of the other ray.
Corresponding angles
lie on the same side of the transversal and in corresponding positions
arc
part of a circle
trigonometric ratios
SOHCAHTOA
angle
formed by two rays with the same endpoint
tangent
A line in the plane of a circle that intersects the circle in exactly one point.
right angle
an angle that measures 90 degrees
Vertical angles
two nonadjacent angles formed by two intersecting lines
Distance
The length of a path between two points
Alternate exterior angles
Angles that lie outside a pair of lines and on opposite sides of a transversal.
chord
A segment whose endpoints lie on a circle
acute angle
an angle that measures between 0-90 degrees
radian
a unit of angle measure based on arc length
isosceles triangle
a triangle with at least two congruent sides
Section 2
(19 cards)