http://www.ck12.org Chapter 7. Similarity
Example C
Find the missing variable:
Set up a proportion and solve like in the previous examples.
12
4
=
x
3
36 = 4 x
x= 9Watch this video for help with the Examples above.
MEDIA
Click image to the left for use the URL below.
URL: http://www.ck12.org/flx/render/embeddedobject/52565CK-12 Foundation: Chapter7ProportionswithAngleBisectorsB
Vocabulary
Pairs of numbers areproportionalif they are in the same ratio. Anangle bisectoris a ray that divides an angle into
two congruent angles.
Guided Practice
Find the missing variables: