It is c I did the test/quiz
Given:
In triangle DEF, HG is parallel to DF.
To find:
The value of x.
Solution:
In triangles DEF and GEH,
(Common angle)
(Corresponding angle)
(By AA property of similarity)
We know that corresponding sides of similar triangle are proportional.





Isolating variable terms, we get



Therefore, the value of x is equal to 4.
Answer:
undefined slope
Step-by-step explanation:
The line is a vertical line
Vertical lines have an undefined slope
False because the answer would be -10