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a_sh-v [17]
2 years ago
13

Attached below. 20pts will thanks rate and give best answer

Mathematics
1 answer:
KengaRu [80]2 years ago
8 0
I <em>think</em> the correct answer is A, but please do not be upset with me if it is incorrect.

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The angels of a triangle have a sum of 180°. The angles of a rectangle have a sum of 360°. The angels of a pentagon have a sum o
Airida [17]

Step-by-step explanation:

It is given that the angels of a triangle have a sum of 180°. The angles of a rectangle have a sum of 360°. The angels of a pentagon have a sum of 540.

<u>Let me define the each terms.</u>

1. We know that each angle in a triangle is 60°, So there is a three angle in a regular triangle.

  • 60° + 60° + 60°
  • 180°

2. We know that each angle in a rectangle, is 90°, So there is a four angle in a regular rectangle.

  • 90° + 90°+90°+90°
  • 360°

Similarly,

  • There is 8 angle in a regular octagon and each angle measurement is 135°.

So, sum of the angles of an octagon = 135° × 8

Sum of the angles of an octagon = 1080°

Therefore, the required sum of the angles of an octagon is 1080°

6 0
3 years ago
Find the area round to two decimal places as needed
Mademuasel [1]

To find the area of an obtuse triangle you have to multiply the base of the triangle by the vertical height and divide the result by 2 following the formula:

A=\frac{b\cdot h}{2}

The base of the triangle is b= 7 miles and the height is h= 8 miles, using these lengths calculate the area as follows:

\begin{gathered} A=\frac{7\cdot8}{2} \\ A=\frac{56}{2} \\ A=28mi^2 \end{gathered}

The area of the triangle is 28 square miles.

3 0
1 year ago
HELP ASAP<br><br>what is the value of x enter your answer in the box​
Alexxx [7]

Answer:

x=25

Step-by-step explanation:

24²+7²=625

√625= 25

5 0
3 years ago
Read 2 more answers
The lock is numbered from 0 to 49. Each combination uses three numbers in a right, left, right pattern. Find the total number of
sineoko [7]

Answer:

147

Step-by-step explanation:

8 0
3 years ago
I need help I'm stuck
ankoles [38]
Then put in some butter that will get you out
8 0
3 years ago
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