Final Flashcards
1
Q
Reflecting about the y-axis
A
-x,y
2
Q
180 CCW rotation
A
-x,-y
3
Q
90 CCW rotation
A
-y,x
4
Q
270 CCW rotation
A
Y,-x
5
Q
Rule for counterclockwise rotation
A
For every 90 degrees you rotate, flip letters AND sign of the first letter
6
Q
Rule for rotating clockwise
A
Flip letters AND sign of second letter
7
Q
Rules for rotation about a point
A
- First write out points
- make second table applying rotation rule(things like 90 CCW about the origin)
- then add new points to old
8
Q
Composition
A
Multiple transformations(ex: glide reflection) Order does matter when doing them
9
Q
Scale factor
A
Image over pre-image
10
Q
Enlargement
A
When the SF is greater than one
11
Q
Reduction
A
When SF is between 0 and 1
12
Q
Properties of parallelogram(5)
A
Opp. Sides are para
Opp. Sides are congruent
Opp. Angles are supp.
Diags. Bisect
13
Q
Reflecting about the x-axis
A
X,-y
14
Q
Properties of kite(5)
A
- 2 pairs of consecutive congruent sides that’s opposite sides are not congruent
- diag. Are perpendicular
- one pair of opposite angles at short end of diagonal are congruent
- long diagonal is perpendicular bi sector of short
- long diagonal bisect opposite angles
15
Q
Trapezoid(2)
A
- pair of parallel sides
- non base consecutive angles are supp.