UNIT 3 PROPS

• Definition of perpendicular lines
• If 2 lines are perpendicular, then they form congruent, adjacent angles.
• Definition of congruent angles
• If 2 lines form congruent, adjacent angles, then the lines are perpendicular.

• If the ext. sides of 2 adj. acute angles are perpendicular, then the angles are complementary.
• Definition of complementary angles
• Definition of perpendicular lines
• If 2 lines are perpendicular, then they form congruent, adjacent angles.

• Definition of complementary angles
• If the exterior sides of two adjacent acute angles are perpendicular, then the angles are complementary.
• Definition of perpendicular lines
• If two lines are perpendicular, then they form congruent angles.

• Definition of Supplementary Angles
• Linear Pair Postulate
• If the exterior sides of two acute adjacent angles are perpendicular, then the angles are complementary.
• Definition of Perpendicular LInes

• Definition of a right angle
• Definition of perpendicular lines
• If two lines intersect to form a right angle, then they are perpendicular.
• If two lines intersect to form congruent, adjacent angles, then the lines are perpendicular.

• If two lines intersect to form congruent angles, then the lines are perpendicular.
• Definition of complementary angles.
• Definition of perpendicular lines
• If the exterior sides of two adjacent, acute angles are perpendicular, then the angles are complementary.

• Definition of congruent angles
• Definition of an angle bisector
• Definition of perpendicular lines
• Definition of midpoint

• Addition Property of Equality
• Angle Addition Postulate
• Definition of an angle bisector
• If the exterior sides of two adjacent, acute angles are perpendicular, then the angles are complementary.

<B is a supplement of <A.
<A is a supplement of <C.
So, <B is congruent to <C.

• Definition of Supplementary Angles
• Congruent Supplements Theorem
• Transitive
• Linear Pair Postulate

• Segment BG and segment CF
• Segment AB and segment FD
• Segment BD and segment AF
• no conclusion