Proof Geometry

Given: B is the midpoint of AC. What should you conclude?

• AB + BC = AC

• AB = BC

• A is the segment bisector of BC

• ABC is a straight angle

Given: <1 and <3 are vertical angles. What should you conclude by the vertical angles theorem?

• <1 and <2 are a linear pair

• <1 and <3 are right angles

• <2 and <4 are vertical angles

Given: <1 and <2 are supplementary. What can you conclude?

• m<1 + m<2 = 180

• m<1 + m<2 = 90

• m<1 = m<2

• nothing

When trying to prove two angles are supplementary, what must you show in your proof?

• that the angles are equal

• that the angles add up to 180 degrees

• that the angles are complements

• that the angles are right angles

If two lines intersect each other at right angles, the lines are ____________.

• parallel

• perpendicular

• the same

• nothing special

Name the Property

• Segment Addition Property

• Def. of Midpoint

• Def. of Congruence

• Subtraction POE

Name the Property

• Reflexive POC

• Substitution POE

• Transitive POC

• Def. of Congruence

Name the Property

• Transitive POE

• Segment Additon Postulate

• Def. of Midpoint

• Substitution POE

Name the Property

• Def. of Congruence

• Def. of Midpoint

• Segment Addition Post.

• Transitive POE

Name the Property

• Transitive POE

• Symmetric POE

• Def. of Congruence

• Reflexive POC