D. Becaus it is the only one that mentions the characters of a triangle
If a line's slope is

, the slope of the perpendicular line is

in this case, the given line has a slope 4, which is 4/1, so the perpendicular line has a slope/gradient
Answer:
6)C,120
7)B,60°
DOES THE ANSWER HELP YOU?
Answer:
(
4
a
+
4
b
+
3
)
(
2
a
+
2
b
−
3
)
Step-by-step explanation:
All the rectangle are square if length becomes equal to breath !