Unit 1 - Proofs/Justifications

Day 3 - Segments:

• Whole equals the sum of its parts

• A midpoint divides a segment into two congruent segments

  • A midpoint divides a segment in half

• A segment bisector intersects a segment at its midpoint

• Perpendicular lines form right angles

• A perpendicular bisector intersects a segment at its midpoint

Day 4 - Angles:

• An angle bisector divides an angle into two congruent angles

  • An angle bisector divides an angle in half

Day 5 - Triangle:

• An isosceles triangle has two congruent sides

  • The sum of the angles of a triangle is 180 degrees