Proof: Perpendicular to Angle

Let's prove the following theorem:

Proof:

Proof Table

#	Claim	Reason
1	∠ABC is a right angle	if AB ⊥ BC, then ∠ABC is a right angle (Perpendicular Angles)
2	m∠ABC = 90	if ∠ABC is a right angle, then m∠ABC = 90 (Right Angle Property)

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