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# 2.4 & 2.5 TEST REVIEW - PowerPoint PPT Presentation

Properties Properties Proofs Angles Angles. 2.4 & 2.5 TEST REVIEW. 100. 100. 100. 100. 100. 200. 200. 200. 200. 200. 300. 300. 300. 300. 300. 400. 400. 400. 400. 400. 500. 500. 500. 500. 500. Properties ~ 100 Points. Name the property.

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Properties Properties Proofs Angles Angles

### 2.4 & 2.5 TEST REVIEW

100

100

100

100

100

200

200

200

200

200

300

300

300

300

300

400

400

400

400

400

500

500

500

500

500

Name the property.

If a = b, then a + c = b + c.

Back

Name the property.

If a = b, then a x c = b x c.

Multiplication

Back

Name the property.

a = a

Reflexive

Back

Name the property.

If a = b and b = c, then a = c.

Transitive

Back

What Law of Deductive Reasoning is similar to the transitive property?

Law of Syllogism

Back

Name the property.

If a = b, then a - c = b - c.

Subtraction

Back

Name the property.

If a = b, then b = a.

Symmetric Property

Back

Name the property.

If a = b, then b can replace a in any expression.

Substitution

Back

Name the Property.

a(b + c) = ab + ac

• distributive

Back

What are the 3 properties that make up the Properties of Congruence?

Reflexive, Symmetric, Transitive

Back

• What is the name of the proofs we are learning?

• 2-Column Proofs

Back

• What goes on the first line of a 2-column proof?

Given

Back

• What goes on the last line of a

2-column proof?

• What you were trying to prove and QED

Back

What goes in the right column of 2-column proofs?

• Properties, postulates, justifications

Back

What goes in the left column of 2-column proofs?

• steps

Back

• A pair of non-adjacent angles formed by the intersection of two straight lines.

Vertical angles

Back

• Two angles in a plane that share a common vertex and side but do not overlap.

Back

• Two angles that add to 180°.

Supplementary

Back

Write the equation that Angle Addition Postulate gives you for the figure below.

m<AXE + m<EXC = m<AXC

Back

• Find the measure of <AOB

A

B

E

O

60°

D

C

30°

Back

What is another name for vertical angles?

Opposite Angles

Back

Two angles that add to 90°.

Complementary

Back

Find m<2, if m<4 = 75°.

75°

Back

• Find the measure of <DOC

A

B

E

O

60°

D

C

30°

Back

• A ray or segment that divides and angle into 2 congruent angles.

Angle Bisector

Back

JEOPARDY

• Give a reason for each step.

Simplify (Like Terms)

Subtraction Property

Division Property

• Discuss how much you will wager with your team. You can wager as little as or up to as many points as you have.

What does QED mean in BOTH Latin and English?

Quod Erat Demonstrandum

Therefore it is true!