Quantities standardized for scientific use

Do every isosceles triangle have two equal angles? How do you get the prime numbers with calculator? Which following constructions can be accomplished with paper folding? What is -12-7? Need to replace the frame for your first up canopy 10 x 10 100 sq ft? How can you use the dimensions of a rectangle to find its area without tiling it? What is the number 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000? How long is 39.3700787 inches in meter? Two digit numbers contain exactly one 4? What does pie equals MC2 mean? What is Xsquared equals -8x plus 15 using the quadratic formula? How they called the pyramid is perpendicular distance between the vertex and bases? Illustrate the principle of closure? 1 equals 50miles if two towns are 5 apart on the map about how many miles apart are they? What is 102 126 118 120 x mean equals 120? What is the gross profit percentage if an item wholesale cost is 1.65 and is sold at 2.20? What is 3 and 6 over 7 divided by 1 and 2 over 7? What is the definition of the word deviate? What is averaging principle? Why is 0 not a prime nor composite?