That is 99 degrees if you have the triangle facing the other way
Answer:
Lines BC and F represent perpendicular lines
Step-by-step explanation:
we have
<em>Line BC</em>

the slope of the line BC is 
<em>Line F</em>

the slope of the line F is 
we know that
If two lines are perpendicular, then the product of their slopes is equal to -1
so

we have
-----> slope line BC
-----> slope line F
Find the product of their slopes

therefore
Lines BC and F represent perpendicular lines
Answer: 8.25 miles
Step-by-step explanation:
12.75 - 4.5 = 8.25
Answer:
r≈1.27cm
Step-by-step explanation:
AFC and DFB any pair that are across from each other