Question | Answer |
reflection | A transformation across a line.
Example: Mirror-like |
postulate | An automatically true statement without proof; axiom |
True or False: All rays continue forever in multiple direction | False: only one direction it continues forever |
A_____________ is a straight path that has no thickness and extends forever. | line |
_______________________ are two rays that have a common endpoint and form a line. | Opposite rays |
A point is represented by a _____. | dot |
Points, lines, and planes are __________________. | undefined terms |
True or False: noncoplanar points lie on the same plane. | False: coplanar points lie on the same plane |
A segment is another name for a _______________. | line segment |
True or False: collinear points lie on the same line. | True |
coordinate | A point corresponding to one and only one number on the ruler |
The distance between coordinates is called ________. | length |
True or False: Congruent segments are segments that have the same length. | True |
A ____________ is a way of creating a figure that is more precise. | construction |
Two rays with a common endpoint have a ________. | vertex |
Translation | slide |
Reflecting across the x-axis | (x,y)>(x,-y) |
Reflecting across the y-axis | (x,y)>(-x,y) |
Reflecting across y=x | (x,y)>(y,x) |
The method for translation | by a vector
Ex: (x,y)>(x+a,y+b) |
What angle do you rotate the figure if the method is (x,y)>(-x,-y)? | 180 degrees |
What is the method for rotating a figure 90 degrees? | (x,y)>(-y,x) |
True or False: Plane symmetry only goes for 2-D figures. | False: 3-D |
True or False: If planes intersect they only do in a straight line. | True |
What are 2 real world examples of two planes intersecting each other? | A wall, table, etc. |