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What is a valid classification of a triangle?
A triangle is a 3 sided polygon whose 3 interior angles add up to 180 degrees
What is the sum of the angle measures in a 20 sided polygon?
The answer is 324 degrees. The general formula is (n-2)*180 degrees, where n=number of sides/vertices(both are same). But this is valid only for convex polygon (every internal angle is strictly less than 180 degrees & every line segment between two nonadjacent vertices of the polygon is strictly interior to the polygon except at its endpoints)
How do the number properties help us to prove that expressions are equivalent?
You can usually make valid transformations in one of the expressions until you get the other expression. A "valid transformation" in this context means one that doesn't change the value of the expression.
Is a biased sample always valid?
a biased sample is valid determin
What is a valid conclusion?
A valid conclusion is when your conclusion is written using the text you have and get it right.
