<span><span>Each time
we add a side (triangle to quadrilateral, quadrilateral to pentagon, etc), we </span>add
another 180°<span> to the total of the
interior angle.</span></span>
Triangle,
sum interior angle is 180
Square,
is 360
Pentagon is
540
So the
formula is
<span>180 ( n –
2 )</span>
Answer:
3
Step-by-step explanation:
3
3/4 mile/ (1/3 hr)= 2.25 miles/hr.
Her walking pace is 2.25 miles/hr~
70=3x+10
Subtract 10 from both sides
60=3x
Divide both sides by 3
20=x
x=20