Mini Quiz Flashcards
Point
It names a location and has no size; Usually named with a capital letter
Line
It is a straight path that has no thickness and extends forever
Line Segment
It is a part of a line consisting of two endpoints and all points between them
Ray
It is a part of a line that starts at an endpoint and extends forever in one direction
Plane
It is a flat surface that has no thickness and extends forever
Angle
It is a figure formed by two rays, lines, or line segments with a common endpoint, called a vertex
Acute Angle
It is an angle that measures greater than 0° and less than 90°
Right Angle
It is an angle that measures 90°
Obtuse Angle
It is an angle that measures greater than 90° and less than 180°
Straight Angle
It is an angle measuring 180°
Complementary Angles
They are two angles whose measures have a sum of 90°
Supplementary Angles
They are two angles whose measures sum to 180°
Scalene Triangle
It is a triangle with no congruent sides
Isosceles Triangle
It is a triangle with at least two congruent sides
Equilateral Triangle
It is a triangle with all three sides congruent
Right Triangle
It is a triangle with one right angle
Intersecting Lines
They are two or more lines that share a common point of intersection
Perpendicular Lines
They are lines that intersect at 90° angles
Parallel Lines
They are lines in the same plane that do not intersect
Collinear
They are points that lie on the same line
Non-Collinear
They are points that do not lie on the same line
Coplanar
They are points that lie on the same plane
Non-Coplanar
They are points that do not lie on the same plane
Postulate
A statement that is assumed to be true without proving it to be true
Postulate 1
A straight line segment can be drawn between any two points
Postulate 2
Any straight line segment can be extended indefinitely in a straight line
Postulate 3
Given any straight line segment, a circle can be drawn having the segment as the radius and one endpoint as the center
Postulate 4
All right angles are equal
Postulate 5
If a straight line falling on two straight lines makes the interior angles on the same side of it taken together less than two right angles (180°), then the two straight lines meet on that side on which the sum of angles is less than two right angles (180°)
Notion
An idea that should be common sense
Common Notion 1
Things which equal the same thing also equal one another
Common Notion 2
If equals are added to equals, then the wholes are equal
Common Notion 3
If equals are subtracted from equals, then the remainders are equal
Common Notion 4
Things which coincide with one another equal one another
Common Notion 5
The whole is greater than the part
