4/40
1/10
x/5 = 8/20
x=2
True or false? If △ABC ~ △DEF, and angle B is 40 degrees, then angle E is 40 degrees.
True
In a/b=c/d, a and d are known as what?
Extremes
Find the geometric mean of 4 and 20.
4 root 5
(12x2z3) / (4x3yz)
3z2/xy
x/2 = 4/7 = 10/16
x = 5/4 and y = 32/5
Two polygons are similar polygons if corresponding ____ are congruent and corresponding _____ are proportional.
Angles, side lengths
Supplementary angles add up to how many degrees?
180
What are Mr. Tan's favorite cookies?
Snickerdoodles
A pair of angles are complementary and are in the ratio of 4:5. What are the measures of both angles?
40 and 50 degrees
(x-2)/x = x/(x+3)
x = 6
Draw two polygons that are similar.
Complementary angles add up to how many degrees?
90
Where did Mr. Tan go to university?
San Francisco State University
10in. : 3 ft.
5/18
Write all 4 properties of proportions.
a/b=c/d, b/a=d/c, a/c=b/d, and (a+b)/b = (c+d)/d
△RST ~ △XYZ, list all pairs of congruent angles and proportional side lengths.
Angles: R=X, S=Y, and T=Z.
Side Lengths: RS=XY, ST=YZ, and TR=ZX.
Write 4 to 6 in two different ratios and simplify the ratios.
2/3 and 2:3
I love you.
Thank you.
3 kilometers : 100 meters
30
(x-1)/(x+2) = 10/(3x-2)
x = 6 and x = -1
Polygon ZYXW ~ FGHJ. If side FG is 20 and side ZY is 25, what is the scale factor of ZYXW to FGHJ.
5/4
In a _______, the product of the extremes equals the product of the means.
Proportion
Who was Mr. Tan's Algebra II teacher at Westmoor?
Mr. Adams