Proofs with Perpendicular Lines Notes 3.4 Core Vocabulary Example Perpendicular Bisector – A _________ that __________________ a line _____________________ at its _______________ and is ____________________ to the line ________________________. Core Concept Example Linear Pair Perpendicular Theorem – If __________ lines _______________ to _________ a ____________ _____________ of ___________________ angles, then the _____________ are _________________________. Perpendicular Transversal Theorem – If a ___________________ is _______________________ to ________ of ________ _______________ lines, then it is _____________________ to the ___________ line. Lines Perpendicular to a Transversal Theorem – If ________ lines are ________________________ to the ___________ line, then they are __________________ to _____________ ______________.