Translations
What is the slope of a line parallel to y=-2/3x+2
m=-2/3
If point A is at (-2,-2). You translate it 4 units down. What would the new point be.
(-2, -6)
What does congruent mean?
Same size and shape
If you had point (x,y) and you were asked to rotate it clockwise 90 degrees, what would your new point be?
(y,-x)
How do you know two lines are perpendicular?
How do you know lines are parallel?
Form 90 degree angle and they have opposite reciprocal slopes
Never cross, and have same slope.
How do you calculate the degrees of rotational symmetry that a figure has?
360/n
where n represents the lines of symmetry.