In an equilateral triangle all the sides are equal. This means that all the angles add up to 180 degrees.
Divide 180 by 3 and you get 60.
You want an exterior angle so you cut the angle in half ( it is now 30 )
Because the base and the line are parallel (form right angle if drew line connecting them) x is equal to
90-30=60
X could be the positive integers 2, 3, 4, or 5
Its D
Because the rate of change is 1.5 and 1.5x10 is 15
The probability of rolling a 3 on a six sided number cube is 1/6
