Answer:
The Value of x is 40.
Step-by-step explanation:
Given:
∠SRT ≅ ∠STR
∠SRT = 20
m∠SRT = 4x
To find: Value of x
Solution:
From the given data,
m ∠SRT = 20
Also ∠SRT ≅ ∠STR
Hence from congruence and equality property we can say that;
m∠STR= 20
m∠STU= 4x
Now by straight angle property which states that sum of two angles which are created by a straight line is always 180.
Hence,
∠STR +∠STU =180
Now Substituting the given values we get;
[tex]20+4x=180\\4x=180-20\\4x=160\\\\x=\frac{160}{4} =40[/tex]
Hence m∠STU = 4x =4 ×40 = 160°
Hence the value of x = 40.