Given:quadrillateral ABCD inscribed in a circle prove angel A and angel C are supplementary angel B and D are supplementary

What is the relationship between all triangles that can be drawn given the same three angles

Afurniture store is having a weekend sale and is offering a 20% discount on patio chairs and tables the sales tax on furniture is 6.25%

Use mathematical induction to prove the statement is true for all positive integers n, or show why it is false. 1^2 + 4^2 + 7^2 + + (3n - 2)^2 = [n(6n^2-3n-1)/2]