What is an Alament?

What is a shape with 3 sides and 3 angles totaling 180 degrees? What times itself equals 1521? Is total addition or multiplication? How do you find the volume for a triangular prism? What is the smallest number that is a multiple of 13 and is also divisible by 4 and by 6 with zero remaining? Is -9.7 an irrational number? Find the coordinates of a second point on the graph of a function f if the given point is on the graph and the function is even? What is an analogy between file and folders? Can a parallelogram has consecutive sides congruent? What is the formula for slope intercept form a line? Which letter comes next in this series of letters b a c b d c e d f? Which equation describes a parabola that opens left or right and whose vertex is at the point h v? What symbol represents energy in an equation? What is 3 to the 4th power divided by 3 to the 7th power equal to? What is the altitude of an equilateral triangle if its perimeter is 15? What is negative six to the negative second power? How do you tell if a quadratic function is minimum value or a maximum vale? Is -0.4744 rational or irrational? What 3d shape has 2 opposite identical faces and some other faces which are parallelogram? How do you factor 3x squared plus 21x?