Question

geometry help needed asap !

Answer 1

Question 1
Cory is building an enclosure with recycled cardboard for her collection of model cars. Her design is as shown.

http://tinypic.com/r/15frtld/6

Cory needs a total length of 170 inches of cardboard for her project. What is the length of side BC in inches?

a) 9
b)45
c)54
d)5

Question 2
Look at this polygon.

http://tinypic.com/r/2cia1s3/6

Bonnie performed four different transformations on the polygon to create four different tessellations. Each figure below shows the different tessellations she created

http://tinypic.com/r/4lt4ao/6

Which tessellation was created using a transformation that was different from the others?
a) Figure 1
b)Figure 2
c)Figure 4
d)Figure 3

question 3

Reba is creating a series of rectangles, one inside the other. The length of the first rectangle, Rectangle A, is three inches. Reba dilates Rectangle A about its center by a scale factor of two to get Rectangle B. She repeats this process using the same scale factor till she gets a rectangle of length 96 inches.

How many dilations did Reba perform including the dilation of Rectangle A?

a)13
b)3
c)4
d)5

Answer 2

question 1. look the left image is the design.
the length ML in the design becomes 40 inches. in the real project. soevery side in the project is 5 times the length in the design. therefore the sides become CD=40, DE=15, EF=25, FA=30 and AB=15. these all sides add up to be 125 inches. Since the total length of cardboard used is 170, therefore BC=170-125= 45 inches

Answer 3

Ques. 1 The project is 5 times the size of the design. 6 + 3 = 9 for KL, so x 5 = 45 for BC.

Ques 2. Figure 4 is the different one. It is the only reflection.

Ques. 3 5 dilations. The sides became 6, 12, 24, 48, then 96.