The process of making a conjecture based on patterns that are observed
100
Lines that cross in exactly one point
What are intersecting lines?
100
It's measure is greater than 90 degrees, but less than 180 degrees.
What is an obtuse angle?
100
This is a location. It has no size.
What a point?
100
This is used to measure angles
What is a protractor?
200
An example to prove a conjecture is incorrect
What is a counterexample?
200
Lines that are coplanar and never intersect
What are parallel lines?
200
These angles have the same measure
What are congruent angles?
200
This a series of points that extends in two opposite directions without end.
What is a line?
200
This is the unit used to state the measurement of an angle
What is a degree
300
This drawing is done on dot paper to show three sides of a figure from a corner view
What is an isometric drawing?
300
Lines that are noncoplanar
What are skew lines
300
Two angles whose measures have a sum of 90
What are complementary angles?
300
This is a flat surface that has no thickness
What is a plane?
300
Points can be put into one-to-one correspondence with the real numbers so that the distance between any two points is the absolute value of the difference of the corresponding numbers.
What is the Ruler Postulate?
400
This drawing shows the base of a structure and the height of each part
What is a foundation drawing?
400
Lines that intersect to form four right angles
What are perpendicular lines?
400
Two coplanar angles with a common side, a common vertex, but no common interior points
What are adjacent angles?
400
These lie on the same line
What are collinear points?
400
If three points A,B, and C are collinear and B is between A and C, then AB + BC = AC.
What is the Segment Addition Postulate?
500
This is a two-dimensional pattern that can be folded to form a three-dimensional figure
What is a net?
500
Part of a line consisting of two endpoints and all the points between them.