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Corresponding Angles: ∠ KJG ≅ ∠ GHK, ∠ JGK ≅ ∠ HKG, ∠ GKJ ≅ ∠ KGH
Corresponding Sides: GK ≅ GK, KJ ≅ GH, JG ≅ HK
Congruence Relation: △ JGK≅△ HKG
To show that the two triangles are congruent, we can check for congruent angles and congruent sides.
Let's first check the angles. Notice that because GHKJ is a rectangle, ∠ JGK and ∠ HKG are alternate interior angles as well as ∠ GKJ and ∠ KGH. By the Alternate Interior Angles Theorem, we can conclude that these angles are congruent.
∠ KJG &≅ ∠ GHK ∠ JGK &≅ ∠ HKG ∠ GKJ &≅ ∠ KGH All angles of △ JGK have congruent pairs in △ HKG.
Now let's check the sides. We can see that GK is a common side for both triangles.
Therefore, the congruence relationships between the sides of the triangles can be written as follows. GK &≅ GK KJ &≅ GH JG &≅ HK All sides of △ JGK have congruent pairs in △ HKG.
Since the vertices of the two triangles can be paired up so that the corresponding angles and sides are congruent, the two triangles are congruent. △ J G K ≅ △ H K G