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Topic 1 Geometry
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Gravity
Key Concepts:
Terms in this set (18)
Point
Describes a location but has no size
Line
Made up of an infinite number of points that extend infinitely far in opposite directions
Plane
A flat surface that has no thickness and extends forever
Segment
Portion of a line between two points (endpoints) on the line and all of the points between the endpoints
Ray
A part of a line that starts at an endpoint and extends forever in one direction
Angle
Consists of two rays that have the same endpoint. The common endpoint of the two rays is called the vertex. The rays are called the sides.
Supplementary Angles
Two angles whose sum is 180 degrees.
Complementary Angles
Two angles whose sum is 90 degrees
Angle Bisector
A ray that divides an angle into two congruent angles
Conjecture
A statement that you believe to be true based upon your observations
Incenter
The point of concurrency of the three angle bisectors of a triangle. This point is equidistant from the sides of the triangle.
Inscribed circle of a triangle
The incenter is the center of this circle. This circle only intersects the sides of the polygon at one point.
Perpendicular lines
Two lines that intersect to form right angles
Perpendicular Bisector
A segment, ray, line, or plane that is perpendicular to a segment at its midpoint
Circumcenter of a triangle
The point of concurrency of the three perpendicular bisectors of a triangle. This point is equidistant from the vertices of the triangle.
Circumscribed Circle
Every vertex of the polygon lies on this circle
Coplanar Points
Points that lie on the same plane
Inductive Reasoning
Reasoning in which an conclusion is made by making observations to find a pattern
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