Is the sum of the interior angles of an n-gon is 90 degree's (n-2)?

If x2 plus y4 equals 10x plus 7 then what is the slope of the tangent line at 1 -2 and what is the equation of that tangent line- and at what point are the lines tangent to the original equation? What is 1.6 times 0.75? How much is 15kg in liters? How do you write 75hundred thousands in standard form? What are the Cylinder numbers for a 3.0l 1994 Ford Aerostar? What is the theorical probability of rolling a 4 after rolling a number cube 72 times? What does signature collection mean? What are the personal pronouns have number person and what? What is tenth of 11? How many cubic inches are in 1000 cc? How many squares are there in a cube? 48 cm equals how many m? What is the mixed numeral form of 1249.625? How many ice you need for 70 people? How many times should you invert a micro collection tube for mixing? What is two thirds plus one tenth equals? How do you find the equation of a line using the slope and a point? Where is 029765760? What is February 14th 1999 in roman numerals? Can twelve go into 96?