Parallel and Perpendicular Proofs

• Linear Pair Perpendicular Theorem

• Perprendicular Transversal Theorem

• Lines Perpendicular to a Transversal Theorem

• Linear Pair Perpendicular Theorem

• Perprendicular Transversal Theorem

• Lines Perpendicular to a Transversal Theorem

• Linear Pair Perpendicular Theorem

• Perprendicular Transversal Theorem

• Lines Perpendicular to a Transversal Theorem

• none

If ∠CAT is a right angle, then m∠CAT = 90°.

• Definition of Right Angle
• Definition of Congruent Angles
• Angle Addition Postulate
• Segment Addition Postulate

If AC ⊥ BD, then ∠DBC is a right angle.

• Definition of Perpendicular Lines
• Definition of Right Angle
• Angle Addition Postulate
• Segment Addition Postulate

What theorem states "If two lines intersect to form a linear pair of congruent angles, then the lines are perpendicular" ?

• Perpendicular Transversal Theorem

• Lines Perpendicular to a Transversal Theorem

• Linear Pair Perpendicular Theorem

Distance formula

• 
• 
• 
• 

In a plane, if a transversal is perpendicular to one of two parallel lines, then ...

• it is parallel to the other line

• it is perpendicular to the other line

• it is skew to the other line

• it does not intersect the other line

Which lines are parallel?

• lines v and w

• lines x and y

• lines v and y

• none