Answer:Here are the conditional statements, converses, inverses, and contrapositives for the given statements: Statement 1: If the lines are perpendicular, then they form four right angles. 23. Conditional: (Lines are perpendicular) → (They form four right angles) 24. Converse: (They form four right angles) → (Lines are perpendicular) 25. Inverse: (Lines are not perpendicular) → (They do not form four right angles) 26. Contrapositive: (They do not form four right angles) → (Lines are not perpendicular) Statement 2: If the even integer is squared, then the result is even. 27. Conditional: (Even integer is squared) → (Result is even) 28. Converse: (Result is even) → (Even integer is squared) 29. Inverse: (Even integer is not squared) → (Result is not even) 30. Contrapositive: (Result is not even) → (Even integer is not squared)