What kind of angle is created by the intersection of two perpediclar lines?

What is a real world use of a quadrilateral? Is LCM of two prime numbers is always the product of those numbers? Why is alluded when Jerry says he had Peter a thousands times and a thousand cocks had crowed in his lifetime? How do you solve x squared plus 4x -3 equals 0 in surd form? Are E F and H collinear? What is the product of the rational expressions below APEX? Is the Fourth way real? Can an irrational number be expressed as a terminating decimal? To the nearest second when will the minute hand lie exactly over the hour hand between 2 pm and 3 pm? What were the arguments on both sides of the women question? What fees do banks charge to convert Euros to Pounds? How many times is the word prostitution listed in the Bible? What is the length of a diameter if the circle radios 5 in? What is the exponential notation for 32768? What is the symbol that is lacking in the Roman Numeral? What is the volume of water in the graduated cylinder? What does the common pagan symbol look like? What is 2.47 to the nearest tenth? What are the factors in the number 80? What did albert Einstein love?