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What is an example of definition by negation?
Definition by negation is a solution to a right angle statement.
What is the negation of the statement quadrilateral abcd is a paralleogram and it has a right angle?
"abcd is not a parallelogram or it does not have any right angles." ~(P and Q) = ~P or ~Q
What does counter example mean in geometry?
if you are doing proof statements...there is converse which is where you flip the statement around so if the statement would be IF a angle measures 90 degrees, THEN the angle is a right anlge. The converse would be IF a angle is a right angle, THEN it is 90 degress. THE COUNTEREXAMPLE would be if the statement was false you would say or show a picture of something defining that statement
How are straight angle's different from right angles Is this a statement?
A straight angle is an angle that is 180 degrees exactly (a straight line). A right angle is 90 degrees (like the corners of a square.)
How do you prove a right angle triangle?
You cannot prove "a right angle triangle". You may or may not be able to prove statements about right angled triangles but that will depend on the particular statement.
