Answer:
x=65
Step-by-step explanation:
In a triangle the three inside angles added together always equal 180. So 73+51+21+x=180
51+21+x=107
21+x=86
x=65
Answer:
ɪ ʟᴏᴠᴇ ʏᴏᴜ sᴏ ᴍᴜᴄʜ ᴘʟssssss
Answer:
ST = 12 units
Step-by-step explanation:
As RA is parallel to ET, the angle in R is equal to the angle in T, and the angle in A is equal to the angle in E, so the triangle RAS is similar to the triangle SET.
If RT is 21 units, we have that RS + ST = 21 -> RS = 21 - ST
Using a rule of three with the sides of the triangle (as they are proportional), we have:
RS / ST = AR / ET
(21 - ST) / ST = 6 / 8
4 * (21 - ST) = 3*ST
84 - 4*ST = 3*ST
7*ST = 84
ST = 12 units
Hi there!
~~~~~~~
Sorry you had to wait a hour for your answer, but I believe the correct answer you are looking for is the answer<em> </em><em>D) 82.</em>
Simplify 2^2 to 4
4 + 3^4 - 2
Simplify 3^4 to 81
4 + 81 - 3
Simplify
<em>82. </em>
<em>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</em>
Hope this helped, have a wonderful day. Feel free to mark me brainiest if it did. :)
Given:
The figure of a quadrilateral ABCD.
To find:
The perimeter of the quadrilateral ABCD.
Solution:
In an isosceles triangle, the two sides and base angles are congruent.
In triangle ABD,
[Given]
is an isosceles triangle [Base angle property]
[By definition of isosceles triangles]
...(i)
In triangle BCD,
[Given]
All interior angles of the triangle BCD are congruent, so the triangle BCD is an equilateral triangle and all sides of the triangle area equal.
[Using (i)] ...(ii)
Now, the perimeter of quadrilateral ABCD is:
![Perimeter=AB+BC+CD+AD](https://tex.z-dn.net/?f=Perimeter%3DAB%2BBC%2BCD%2BAD)
![Perimeter=11+8+8+8](https://tex.z-dn.net/?f=Perimeter%3D11%2B8%2B8%2B8)
![Perimeter=35](https://tex.z-dn.net/?f=Perimeter%3D35)
Therefore, the perimeter of the quadrilateral ABCD is 35 units.