Question

given: ∠fhg and ∠kjg are right angles;
fh ≅ kj
prove: △fgh ≅ △kgj
√1. we know that ∠fhg ≅ ∠kjg because all right angles are congruent√.

1. we know that ∠fgh ≅ ∠kgj because they are angles. adjacent supplementary vertical

Explanation:

Step1: Identify angle - congruence reason

We need to determine why ∠FGH≅∠KGJ. Looking at the diagram, ∠FGH and ∠KGJ are formed by the intersection of two lines. Vertical angles are the angles opposite each other when two lines intersect.

Step2: Select the correct term

Since ∠FGH and ∠KGJ are opposite each other at the intersection of two lines, they are vertical angles.

Answer:

vertical