May 12 CW Geo-3 Def, Prop, Post and Theo

If B is between AC then AB + BC = AC is an example of which postulate?

• subtraction property of equality

• addition property of equality

• segment addition postulate

• angle addition postulate

The property demonstrated by the following:

If AB=CD and CD=EF, then AB=EF

• reflexive

• substitution

• segment addition

• transitive

If G is interior of <ABC then <ABG + <GBC = <ABC is an example of which postulate?

• angle addition postulate

• congruent angle postulate

• segment addition postulate

• supplementary angle postulate

What does the word BISECT mean?

• To cut something into more than five pieces.
• It is a plane with two sets of wings.
• A shape that has three sides. 
• To cut something into two congruent pieces or in half.

In the drawing, line l || m. What is true of angles 1 and 2 and why?

• They are supplementary by same side interior angles theorem.

• They are congruent by alternate interior angles theorem

• They are congruent by alternate exterior angles theorem.

• They are congruent by corresponding angles theorem.

State the angle relationship and find the measure of angle 1

• Corresponding Angles

  110

• Alternate Exterior Angles

  110

• Corresponding Angles

  70

• Alternate Exterior Angles

  70

Alternate Exterior Angles Theorem

• If a pair of parallel lines is cut by a traversal, then alternate exterior angles are congruent.

• If a pair of parallel lines is cut by a traversal, then alternate exterior angles are supplementary.

• If alternate exterior angles are congruent, then a pair of parallel lines is cut by a traversal.

• If alternate exterior angles are supplementary, then a pair of parallel lines is cut by a traversal.

Which property is used here; "If AB=CD, then CD=AB"?

• Reflexive Property

• Symmetric Property

• Transitive Property

What does a proof always start with?

• Theorems

• Given Statement(s)

• Postulates

• Reasons

What property states that something is congruent to itself?

• Symmetry Property of Congruence

• Congruence Property

• Reflexive Property of Congruence