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Earn +20 ptsQ: What statement do you need to prove is a rectangle?
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In math what one thing do you need to prove a statement is false?
To prove a statement false, you need ONE example of when it is not true.To prove it true, you need to show it is ALWAYS true.
What is the contrapositive of the statement if it is a square then it is a rectangle?
If it is NOT a rectangle, then it is NOT a square.
How do you prove that each of four angles of a rectangle is a right angle?
From Wikipedia: "...a rectangle is any quadrilateral with four right angles". So there isn't much to prove, that's how the rectangle is defined.
How can you prove that a rectangle is really a rectangle?
In a rectangle, all the opposite sides, and angles are congruent to each other. All 4 angles of the rectangle, are right angles.
To prove a statement by contradiction one begins by assuming the statement?
opposite
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