Corresponding Sides
True or false:
the ratio of corresponding sides of similar shapes are proportional
true
the formula for dilation is:
(kx,ky)
What is the formula for slope intercept form?
y=mx+b
What is the angle sum theorem?
all angles inside a triangle add up to 180 degrees
Which transformation does not preserve congruence?
dilation
Ratios for corresponding sides are written as __________
fractions
new/old
image/pre-image
what does the m stand for in our slope equation?
slope
complementary angles add up to?
90 degrees
translate a point (x,y) 4 units up and 2 units left
(x-2, y+4)
corresponding sides are always ________________
proportional
If the scale factor is less than 1, then the image __________.
If the scale factor is greater than 1, then the image __________.
shrinks/gets smaller/reduces
enlarges, grows, gets bigger
what does the b stand for in our slope equation?
y-intercept
angles that add up to 180 degrees are called?
supplementary
Reflect over the y-axis RULE--------
Reflect over the x-axis RULE--------
(-x, y)
(x, -y)
True or false
When a shape is dilated, the angles change.
false
After dilation, an images perimeter can be be found by multiplying the pre-image perimeter by the _______ ________.
scale factor
y2-y1/x2-x1
Same-side angles are ________________
alternate angles are _____________
supplementary
congruent
Rotate 90 or 270 degrees you have to __________________.
switch the x and y.
Dilation is the only transformation that is ___________.
similar
After dilation, an images area can be be found by multiplying the pre-image area by the _______ ________ __________.
scale factor squared
how do we put the slope formula in desmos?
y1~mx1+b
to find the exterior angle, you add the two __________ __________ __________.
to find one of the interior angles, you __________ the ________ angle and the _______ angle.
remote interior angles (far away inside angles)
subtract, exterior, interior
Rotate 180 degrees RULE-------
(-x, -y)