2CFULesson5 Perpendicular Lines

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Does the definition of perpendicular lines or theorem tell you the following is true:
If segment AB is perpendicular to segment BC, then <ABC is a right angle.

Definition of perpendicular lines

Theorem 2-4 All right angles are congruent

Theorem 2-5 If two lines form congruent adjacent angles, then the two lines are perpendicular.

Theorem 2-6 If the exterior sides of two adjacent acute angles are perpendicular, then the angles are complementary.

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Definition of perpendicular lines

Theorem 2-4 All right angles are congruent

Theorem 2-5 If two lines form congruent adjacent angles, then the two lines are perpendicular.

Theorem 2-6 If the exterior sides of two adjacent acute angles are perpendicular, then the angles are complementary.

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Definition of perpendicular lines

Theorem 2-4 All right angles are congruent

Theorem 2-5 If two lines form congruent adjacent angles, then the two lines are perpendicular.

Theorem 2-6 If the exterior sides of two adjacent acute angles are perpendicular, then the angles are complementary.

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