10. Corresponding angles are always congruent. True False

Step 1 ：This is a statement about geometry, specifically about corresponding angles. In geometry, corresponding angles are pairs of angles that lie on the same side of the transversal in matching corners.

Step 2 ：According to the properties of parallel lines, if two parallel lines are cut by a transversal, then the corresponding angles are congruent.

Step 3 ：So, the statement 'Corresponding angles are always congruent' is generally considered to be true.

Step 4 ：However, it's important to note that this is only true when the lines are parallel. If the lines are not parallel, the corresponding angles are not necessarily congruent.

Step 5 ：So, the statement is not always true.

Step 6 ：Final Answer: \(\boxed{\text{False}}\).