Geo Un1Wk1 - Intro to Geometry & Alg Proofs

Algebra Proof & Intro to Geometry Practice

Intro to Geometry

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Match

Match the following geometric figures with their appropriate dimension

• a point

• a line

• a plane

• a cube

• time

zero dimension

1st dimension

2nd dimension

3rd dimension

4th dimension

• zero dimension

• 1st dimension

• 2nd dimension

• 3rd dimension

• 4th dimension

Multiple Choice

Which rules of mathematics and geometry do NOT need to be proved to be used in a proof?

• definitions

• postulates

• theorems

• none of these

Multiple Choice

Which rules of mathematics and geometry DO need to be proved to be used in a proof?

• definitions

• postulates

• theorems

• none of these

Algebra Proof Writing

Math Response

Solve the Equation (write the number only)

$$x-5=12$$

Type answer here

Correct Answer: 17

Deg^°

Rad

Math Response

Solve the Equation (write the number only)

$$\frac{1}{5}x=-2$$

Type answer here

Correct Answer: -10

Deg^°

Rad

Match

Match the following

Subtraction

Property

Symmetric

Property

Substitution (Simplify)

Distributive

Property

Transitive

Property

• Subtraction

  Property

• Symmetric

  Property

• Substitution (Simplify)

• Distributive

  Property

• Transitive

  Property

Drag and Drop

Placeholder

justifies the statement.

Drag these tiles and drop them in the correct blank above

Addition Property of Equality

Segment Addition Postulate

Subtraction Property of Equality

Combine Like Terms

Multiplication Property of Equality

Fill in the Blank

Which reason justifies the statement?

Fill in the Blank

Which reason justifies the statement?

Drag and Drop

Which reason justifies the statement?

Placeholder

Drag these tiles and drop them in the correct blank above

Reflexive Property of Equality

Transitive Property of Equality

Substitution Property of Equality

Symmetric Property of Equality

none of these

Multiple Choice

What is reason 3?

• Addition Property of Equality
• Subtraction Property of Equality
• Multiplication Property of Equality
• Division Property of Equality

Fill in the Blank

When writing a proof, what is the very first reason you use?

Multiple Choice

What is step 6?

• Subtraction property of equality

• Division property of equality

• Addition property of equality

• Given

Multiple Choice

What is step 2?

• Distributive Property

• Multiplication property of equality

• Division property of equality

• Substitution property

Multiple Choice

Step 1 is what

• addition property of equality
• given
• subtraction property of equality
• prove

Multiple Choice

What is reason 3?

• Addition Property of Equality
• Subtraction Property of Equality
• Multiplication Property of Equality
• Division Property of Equality

Multiple Choice

What is the correct answer for the following proof?

• a.Given b. Subtraction c.6x-5=1 d. 5x-5=1 e.Substitution f.Division g.x=1/Substitution

• a.Given b.Subtraction c.6x-5=1 d.6x-5+5=1+5 e.Transitive Property f.Division g.x=1/Substitution

• a.Given b.Subtraction c.6x-5=1 d.6x-5+5=1+5 e.Substitution f.Division g.x=1/Substitution

Labelling

Fill in the missing parts of the algebra proof

Drag labels to their correct position on the image

Subtraction Property

Addition Property

Division Property

Distributive Property

Substitution (Simplify)

Prove

3x + 5 = 14

Given

Poll

After this review, I feel --- about algebra proofs and geometry vocabulary

• very good/ very confident -- bring it on!

• good/confident

• eh, so-so

• lost! I hardly know my own name...what's geometry?

• other: my thoughts/feelings are not listed here