Transformations in the Coordinate Place (Unit 1)

Question 1

Angle

Answer 1

A figure created by two distinct rays that share a common endpoint (also known as a vertex).

Question 2

Angle of Rotation

Answer 2

The amount of rotation (in degrees) of a figure about a fixed point such as the origin.

Question 3

Bisector

Answer 3

A point, line or line segment that divides a segment or angle into two equal parts.

Question 4

Circle

Answer 4

The set of all points equidistant from a point in a plane.

Question 5

Congruent

Answer 5

Having the same size, shape and measure.

Question 6

Corresponding angles

Answer 6

Angles that have the same relative position in geometric figures.

Question 7

Endpoint

Answer 7

The point at each end of a line segment or at the beginning of a ray.

Question 8

Image

Answer 8

The result of a transformation.

Question 9

Intersection

Answer 9

The point at which two or more lines intersect or cross.

Question 10

Isometry

Answer 10

A distance preserving map of a geometric figure to another location using a reflection, rotation or translation.

Question 11

Line

Answer 11

One of the undefined terms of geometry that represents an infinite set of points with no thickness and its length continues in two opposite directions.

Question 12

Line segment

Answer 12

A part of a line between two points on the line

Question 13

Parallel lines

Answer 13

Two lines are parallel if they lie in the same plane and do not intersect.

Question 14

Perpendicular lines

Answer 14

Two lines are perpendicular if they intersect to form right angles.

Question 15

Point

Answer 15

One of the basic undefined terms of geometry that represents a location. A dot is used to symbolize it and it is thought of as having no length, width or thickness.

Question 16

Pre-image

Answer 16

A figure before a transformation has taken place.

Question 17

Ray

Answer 17

A part of a line that begins at a point and continues forever in one direction.

Question 18

Reflection

Answer 18

A transformation of a figure that creates a mirror image, “flips”, over a line.

Question 19

Reflection line (or line of reflection)

Answer 19

A line that acts as a mirror so that corresponding points are the same distance from the mirror.

Question 20

Rotation

Answer 20

A transformation that turns a figure about a fixed point through a given angle and a given direction, such as 90 degrees clockwise.

Question 21

Transformation

Answer 21

The mapping, or movement, of all points of a figure in a plane according to a common operation, such as a translation, reflection or rotation.

Question 22

Translation

Answer 22

A transformation that slides each point of a figure the same distance in the same direction.

Question 23

Vertex

Answer 23

The location at which two lines, line segments or rays intersect.