Study Guide and Review
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Begin by identifying the pairs of congruent angles, then compare the ratios of corresponding sides.
Are the Figuers Similar? No.
Example Explanation: ABEF ≠ BCFG
To determine whether two polygons are similar, we need to follow two steps.
Looking at the angle markers on the polygons, we can tell that there are four pairs of congruent angles. ∠ A ≅ ∠ E ∠ B ≅ ∠ F ∠ C ≅ ∠ G ∠ D ≅ ∠ H
Now, let's compare the ratios of the corresponding sides. Recall that the included side between a pair of angles of one polygon corresponds to the included side between the corresponding pair of congruent angles of another polygon.
Corresponding Sides | Ratio | Substitute Lengths | Simplify |
---|---|---|---|
A B, E F | AB/EF | 4/10 | 2/5 |
B C, F G | BC/FG | 6/16 | 3/8 |
C D, G H | CD/GH | 4/10 | 2/5 |
D A, H E | DA/HE | 6/16 | 3/8 |
As we can see, the ratios are not equal. Therefore, the given polygons are not similar.