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Corresponding Angles (Polygons)
See It in Action
Two examples of the idea done right—and one common look-alike that is not right.
EXAMPLE
EXAMPLE
NON-EXAMPLE
Definition
Corresponding angles in polygons are angles that occupy the same relative position in two similar or congruent polygons.
For example, if two polygons are matched by a transformation (like a translation, rotation, reflection, or dilation), the angles that “line up” with each other are called corresponding angles.
Example
If you have two similar triangles: △ABC and △DEF
Then:
∠A and ∠D are corresponding angles
∠B and ∠E are corresponding angles
∠C and ∠F are corresponding angles
In similar polygons and congruent polygons, corresponding angles are equal in measure.
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