Answer:
Rational.
Step-by-step explanation:
1.666... can be expressed as 
.
Hence it is rational.
1:5
2 feet long.
3 and 15 simplified equals 1 and 5. So if the building is 10 who's is double 5, then the person is 2.
Its impossible to draw a trapezoid with just three right angles.
a trapezoid has 4 sides, which means all the angles inside the trapezoid must add up to 360 degrees.
if you have just 3 right angles (90x3), you already use up 270 degrees. Leaving you with just 90 degrees left, which is also a right angle. That means, there has to be four, if you have at least 3.
.375 because 1/50= .02 and 1/10=.01 which are both less than .375
