MATHEMATICAL
nIJP' Practice and Problem-Solving Exercises PRACTICES
Practice The figures in each pair are similar. Identify the corresponding sides and angles. See Problem 1.6. A ABC ~ A DEF
A- FGHI ~ KLMN
The figures in each pair are similar. Find the missing length.8- 18 x 9 -
5- Bridges In th e diagram of th e park,
AADF ~ ABCF. The crosswalk at
point A is ab o u t 20 yd long. A bridge
across the p o n d will be built, from
point B to po in t C. W hat will th e length
of th e bridge be? F D
h*— 50 y d — H
h— —--------- 120 yd
The scale of a map is 1 c m : 15 km. Find the actual distance corresponding to
each map distance.See Problem 2.<£> S e e P r o b l e m 3.- 2.5 cm 14. 0.2 cm 15. 15 cm 16. 4.6 cm
- Movies A professional m odel-m aker is building a giant scale m odel of a See Problem 4.
h o u se fly to b e u sed in a science fiction film. An actual fly is ab o u t 0.2 in. long w ith a
w ingspan of ab o u t 0.5 in. The m odel fly for the movie will be 27 ft long. W hat will its
wingspan be? - Maps Abbottsville an d Broken B ranch are 175 mi apart. On a map, th e distance
b etw een th e two tow ns is 2.5 in. W hat is th e scale of the m ap?
134 Ch ap t er 2 So l v i n g Eq u a t i o n s