See Problen 10. Developing Proof Supply the missing reasons in the two-column proof.
Given: а || b, c|| d
Prove: 212 23
2
a
с
d
a
1
4
3
b
Statements
Reasons
1) Given
1) a || b
2) Z3 and 22 are supplementary.
3) c || 0
4) 21 and 22 are supplementary.
5) Z1 Z3
2) a. ?
3) Given
4) b. ?
5) c. ?
11. Write a two-column proof for Exercise 10 that does not use 22.
Proof
m2 Justify each answer.
See Problem

-4

step-by-step explanation:

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.

c) the median for town a 30" is greater than the median for town b 25"

step-by-step explanation:

town a, median = q2 = 30

town b, median - q2 = 25

so the median for town a 30" is greater than the median for town b 25"