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Two polygons are similar if and only if the corresponding angles are congruent

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Q: How can you tell if two polygons are the same?
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Two polygons with same shape not size?

The polygons are said to be similar.


Are any two regular polygons with the same number of sides similar?

Yes, regular polygons will have all sides equal length, and all angles the same. If two polygons of the same number of sides are 'regular' then those two polygons will be similar (they may be scaled, for example).


How can knowing two polygons are congruent help you find angle measure of the polygons?

They have the same measures.


What does it mean for two polygons to be congruent?

the two polygons are congruent if they are the same shape with the same measurements. If they can be flipped, rotated, and/or slid to look identical then they're congruent.


Do two polygons which are similar have the same shape?

Similar polygons are polygons for which all corresponding angles are congruent and all corresponding sides are proportional. From this definition we can say they have the same shape.


When two polygons have the exact same volume are they congruent?

no


What has two parallel polygons that are the same size and shape?

Prism


How can you tell whether two polygons are similar?

Polygons will be similar if they have the same number of sides AND all of their angles are the same. All of their angles are the same if all but one of their angles are the same because with the same number of sides the angles must add up to the same thing. All squares are similar (4 right angles and sides of equal lenght). All rectangles are similar (4 right angles). We know two triangle are similar if two or mare angles are the same, or if one angle is the same and the two adjacent sides are the same length. Variations of this last proof may apply to some other polygons.


What are the two conditions that need to be true to prove that two polygons are similar?

That the sides are of the same ratio and that the interior angles are the same.


Are two regular polygons similar if and only if they have the same number of sides?

yes


Polygons that have the same shape and size are what?

Congruent polygons.


How can you tell if two polygons are similar?

The angles are the same, but the sides don't have to be the same length. or Two polygons are similar if and only ifthe corresponding angles are congruentThe corresponding sides must be in a consistent ratio -- for example, if side AB = (2xA'B'), then sides B'C', C'D' ... K'A' must also be twice as long as their corresponding sides BC, CD, ... KA.