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mafiozo [28]
2 years ago
14

I NEED HELP ASAP. 35 POINTS. In order for two polygons to be similar, two conditions must be met. First, all pairs of correspond

ing sides must be in proportion. Second, all corresponding angles must be congruent. Prove that angle congruence is not enough, by itself, to establish that two polygons are similar. Do this by describing or drawing two polygons that are not similar but whose corresponding angles are all congruent.
Mathematics
1 answer:
galina1969 [7]2 years ago
3 0

Draw a square with side length of 4. All four angles are 90 degrees and all four sides are 4.

Then draw a rectangle with length of 9 and with of 2. All four angles would be 90 degrees, but the proportion of the 2 sides are different when compared to the sides of the square.

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C ÷ -3 = 8 I’ve been stuck on this prob for awhile and I need help on it
Otrada [13]
<h2>Answer:</h2><h2>c = -24</h2><h2 /><h2>Hope this helps!!</h2>

8 0
3 years ago
A circle is divided into three arcs of measures x 2x and 3x what’s the value of x
lidiya [134]

Answer:

60°

Step-by-step explanation:

This questions tests our knowledge on arcs and arc measures.

-Arc measure is the angle that an arc makes with the circle's center.

-The arc measure is proportional to the arc.

#The sum of the 3 arcs is x+2x+3x=6x

Given a circle has 360°, the arc measurement x can be calculated as:

[x+2x+3x]=360\textdegree\\\\6x=360\textdegree\\\\x=60\textdegree

Hence, the arc measurement x is 60°

8 0
3 years ago
kyle is pulled back on a swing so that the rope forms an angle of 30 degress with the vertical the distance from the top of the
Anastaziya [24]

Answer:

12 ft - 2 ft = 10 ft

The rope is 10 feet long.

10 · cos 30° = 10 · √3 / 2 = 8.66 ft

x = 12 - 8.66 = 3.34 ft

Answer:

A ) 3.34 feet

3 0
1 year ago
Find the measurement of angle A
Orlov [11]

Answer:

The value of A is 20

Step-by-step explanation:

To find the answer, note that all triangles have a interior degree measurement of 180. Set the sum of the angles equal to 180.

71x - 1 + 20x + 90 = 180

91x + 89 = 180

91x = 91

x = 1

Now we can use this in the A angle to find the value.

A = 20x

A = 20(1)

A = 20

5 0
3 years ago
How many 9-digit palindromes are there with all the digits being even and each digit appearing no more than twice?
Maru [420]

Answer: 96

Step-by-step explanation:

You can think a 9-digit palindrome as 5 slots.

In each slot, you can put a digit.

_ _ _ _ _

The first slot, is the 9th digit and the 1st digit.

The second slot is the 8th digit and the 2nd digit

etc.

This is for the nature of a palindrome number.

Then, we have 5 selections.

Now, remember that for the first four selections each digit will appear two times, so we can choose each even number only once.

Then:

For the first selection, we have 4 options (2, 4, 6 and 8. The zero can not be chosen here because the 9th digit can not be a zero if this is a nine digit number).

For the second selection we have 4 options, the 3 that remain for the previous selection and the 0, that is even.

for the third selection, we have 3 options.

for the second selection, we have 2 options

for the fifth selection we have only one option.

The total number of combinations is equal to the product of the number of options in each selection, this is:

C = 4*4*3*2*1 = 96

7 0
3 years ago
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