Unit 2 test Flashcards
What is a transformation
Changes to a figure into another figure called a image
What is an Image
The figure after a transformation
What is a translation
A coordinate point slid left or right or up or down
What are congruent figures
Figures are the same shape and size
Corresponding angles
are matching angles
corresponding sides
are matching sides
What is a reflection
A reflection is a tranformation in which a firgure is rotated around a point
Center of rotation
A point in which a rotation is rotated
angle of rotation
The number of degrees a figure rotates
reflection
is a transformation which a figure is rotated around the line of reflection
line of reflection
a reflection creates a mirrored image of the original image
Similar figures
a figure that has the same shape but not nessacarily the same size
Perimeters of similar figures
the ratios of their perimeter is equal to the ratio of their corresponding side lengths
Area’s of similar figures
the ratio of their area is equal to the square of the ratio of their corresponding side lenghts
dilation
A transformation in which a figure is enlarged or reduced by a point
center of Dialation
A point in which a dialation is performed
Scale factor
The ratio of the side lengths of the image to the corresponding lengths of the original figure
Scalene triangle
Two sides are the same
Isocoles triangle
No sides are the same
Equallateral
All sides and angles are equal
Right angle
equal to 90 degrees
Obtuse angle
Between 90 degrees and 180
Acute angle
Between 0 and 90 degrees
Complementary angle
Angles who sums are 90 degrees
Supplementary angles
Angles who sums are 180 degrees
