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Mathematics 9 Online
danny323:

A polygon is reflected across a line. The angles in the original figure are compared to the corresponding angles in the image to see if they are congruent. Which factors does this depend upon?

Mercury:

choices: a. The number of sides of the polygon b. The angle measures of the polygon. c. The line of reflection. d. None of these. They will always be congruent.

Mercury:

thoughts? do you think the number of sides, angle measures, or line of reflection affects whether the angles will be congruent after the translation? if you're having trouble, try sketching a few scenarios where you - test shapes with different numbers of sides to see if the angles change after reflection - test shapes with different angle measures to see if the angle measures change after reflection - test different lines of reflection, with the same shapes, to see if the angle measures change after reflection

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