
Note: figure not attracted to scale.
You are watching: The widths of two similar rectangles are 10 and 8
Examine the over figure.

What is




Two rectangles are similar. One rectangle has actually dimensions


What worth of

Explanation:
For polygons to be similar, next lengths must be in proportion.
Case 1:


The resulting proportion would be:




This is difficult since

Case 2:


The correct proportion statement should be:

Cross main point to resolve for




200 centimeter is the only possible solution.
Explanation:
All sides being same is a problem for congruency, no similarity. Similarity focuses on the ratio in between rectangles and not ~ above the equivalency of all sides. As for the statement regarding the equal angles, every rectangles nevertheless of similarity or congruency have four 90 degree angles.
Explanation:
For two rectangles to be similar, their sides need to be proportional (form equal ratios). The ratio of the two much longer sides have to equal the proportion of the two much shorter sides.

However, the left proportion in our proportion reduces.

We can then deal with by cross multiplying.


We then deal with by dividing.

Explanation:
For 2 rectangles to it is in similar, their sides must be in the exact same ratio.
This problem can be solved using ratios and cross multiplication.

Let"s represent the unknown width of the best rectangle as x.






Two rectangles room similar. One has actually an area of



Explanation:
The score is to fix for the elevation of the second rectangle.
Similar rectangles function on proportionality - the is, the ratios that the sides between two rectangles will be the same. In bespeak to identify the height, we will be making use of this ide of ratios through solving for variables from the area.
First, it"s helpful to attain full dimensions for the first rectangle.
It is given that its base length is 5, and it has actually an area the 20.



This way the very first rectangle has actually the dimensions 5x4.
Now, we may utilize the ide of ratios for similarity. The side lengths the the very first rectangle is 5x4, so the 2nd recatangle must have actually sides that room proportional to the first"s.

We have the information for the first rectangle, for this reason the data may be substituted in.








Therefore, the elevation of the second rectangle is 10.
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Example inquiry #7 : just how To find If Rectangles Are similar
There space two rectangles. One has actually a perimeter of



Possible Answers:
Correct answer:

Explanation:
The score of this problem is to figure out what base length of the 2nd rectangle will make it similar to the very first rectangle.
Similar rectangles function on proportionality - the is, the ratios the the sides in between two rectangles will be the same. In stimulate to determine the base, we will certainly be using this principle of ratios through solving for variables from the perimeter.
First, every the size of the first rectangle must be calculated.
This have the right to be accomplished through using the perimeter equation:





This method the size of the first rectangle room 10x5. We will use this info for the ratios to calculation dimensions that would certainly yield the second rectangle similar because of proprotions.




This will call for revisiting the perimeter equation because that the 2nd rectangle.






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Example inquiry #8 : just how To find If Rectangles Are comparable
The attached image represents the size of two different brands of made linoleum tile. If the 2 tiles are similar, what would be the length of the large tile, provided the info in the figure below?

Possible Answers:
Correct answer:

Explanation:
Two rectangles are comparable if their length and width form the exact same ratio. The little tile has actually a width of



Since the length of similar triangles is twice their respective width, the length of the huge tile have the right to be determined as such:

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Example question #9 : just how To find If Rectangles Are comparable
Are this rectangles similar?

Possible Answers:
yes - scale aspect

no
yes - scale variable

yes - scale variable 2
Correct answer:
no
Explanation:
To determine if these rectangles are similar, collection up a proportion:


These rectangles aren"t similar.
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Example concern #10 : just how To uncover If Rectangles Are similar
Are these rectangles similar?

Possible Answers:
yes - scale element 3
no
yes - scale aspect 2.5
yes - scale element

Correct answer:
yes - scale factor 2.5
Explanation:
To determine if the rectangles space similar, set up a proportion compare the quick sides and also the long sides from every rectangle:


To uncover the range factor, either division 25 through 10 or 7.5 by 3. Either means you will get 2.5.
See more: Determine The Name For Aqueous Hbr (Hydrobromic Acid), How To Write The Name For Hbr (Hydrobromic Acid)
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