Vocab pt 1
A line which a figure is reflected.
What is a Line of Reflection
The ratio of a length in the image to the corresponding length in the original figure.
What is a Scale factor
A rigid motion that turns a fixed point, call the center or rotation.
What is Rotation
Angles that lie on the same side of a transversal and in corresponding positions.
What are Corresponding Angles
Flip, a transformation that flips a figure across a line of reflection.
What is Reflection
A transformation that moves each point along the ray through the point, starting from a fixed center, and multiplies distances from the center by a common scale factors. If a vertex of a figure is the center of dilation, then the vertex and its image after the dilation are the same point.
What is a Dilation
A dilation with a scale factor greater than one. After that, the image is bigger than the original figure.
What is Enlargement
Angles that lie within a pair of lines on opposite sides of a transversal.
What are Alternate Interior Angles
The result of a point, line, or figure.
What is an Image
Two two-dimensional figures are congruent, ⩭, if the second can be obtained from the first by a sequence of rotations, reflections, and translations.
What is a Congruent
A dilation with a scale factor less than one. After that, the image is smaller than the original figure.
What is Reduction
In the interior of two lines on the same side of a transversal.
What are Same-side Interior Angles
Slide, is a transformation that is a rigid motion that moves every point of a figure the same distance and in the same direction.
What is a Translation
A fixed point about which a figure is rotated.
What is Center of Rotation
A two-dimensional figure is alike, ⩬, to another two-dimensional figure if you can map one figure to the other by a sequence of rotations, reflections, translations, and dilations
What is Similar
The two nonadjacent interior angles corresponding to each exterior angle of a triangle.
A change in position, shape, or size of a figure. There are 3 types, Reflection, Translation, and Rotations.
What is a Transformation
The number of degrees a figure is rotated.
What is Angle of Rotation
A line that intersects two or more lines at different points.
What is a Transversal
An angle formed by a side and an extension of an adjacent side.
What is an Exterior Angle of a Triangle