Jamal wrote the following statements:

statement 1: perpendicular lines are two lines that intersect at 90° angles.
statement 2: all right angles are congruent.

which geometry term does each statement represent?

a.) statement 1: definition; statement 2: theorem
b.) statement 1: postulate; statement 2: definition
c.) statement 1: theorem; statement 2: postulate
d.) statement 1: postulate; statement 2: theorem