1) Sum of interior angles of a polygon with n sides = (n-2)*180
2) Degree measure of one angle in a regular polygon with n sides= {(n-2)*180 }/n
3) When multiplying or dividing both sides of an inequality by anegative number, the inequality sign reverses. –x < y => -(-x) > y => x > -y
4) Fraction > (fraction)2 for all positive fractions
5) Fraction > v(fraction ) for all positive fractions
6) If n is a positive integer, (n6)/2 = v(n12 / 4)
7) If z1, z2, z3 … zn are consecutive positive integers and their average is an odd integer => n is odd => sum of series is odd
8) In a triangle with sides of measure a, b and c SHAPE \* MERGEFORMAT , a-b
9) Before confirming try and back solve and make sure that u have answered what has been asked.
10) When the question mentions prime number, remember to think of 2 too.
11) In a triangle, if the sum of two angles = third angle, then it is a right angled triangle.
12) Do not transport informa...