What 3D shape has one face and 1 vertex?

What percent of 10 is 20? Where did the word hexagon come from? What is the scientific notation for 214000? What can you conclude about signs of two integers whose product is positive and negative? What is the value of -3? Is the volume of an 8cm cube less than 100 cm3? What numbers contain 3 5 and 7 as factors and are less than 400? Which of these is the greatest value -0.0835 -0.0819 -0.0821 -0.0872? Is 1.2 greater or less than 1.23? What is the limit of x2 as x approaches 0? What means range in mathematics? What are the characteristics of a obtuse angle? What is the nth term of -2 4 -8 16? Do kites have two pairs of equal sides? Can a function be both even and odd functions? A quadrilateral with 2 parallel sides is? Number when divided by 3 is equal to the sum of the number and 2? What is the number 6.672 to 2 decimal places? What are the odds in favor of randomly drawing the letter Upper U from the letters in the word INSTITUTE? Describe the three types of plate motion and the faults that are characteristic of each type of motion?