2.04 Proofs Practice

What is the first step of nearly any proof?

• Write down the conclusion

• Write down the given information

• Draw a Triangle

• Ask for help

What is the sum of a linear pair of angles?

• 180°

• 90°

• 360°

• 100°

Tags

CCSS.HSG.CO.C.9

What does it mean if two lines are perpendicular?

• The never cross

• They cross at exactly one point

• They form angles that are linear pairs

• They cross at exactly 90°

Tags

CCSS.HSG.CO.A.1

CCSS.HSG.CO.C.9

What is the segment addition postulate?

• The sum of two segments equals the whole segment

• Segments cannot be added

• Segments are broken into two equal parts

• Two segments can be multiplied to calculate the whole length

Which property says that ∠ABD + ∠DBC = ∠ABC

• Angle Congruence Postulate

• Angle Addition Postulate

• Definition of Complimentary Angles

• Segment Addition Postulate

Which property says that if:

AB = BC
Then AB ≅ BC

• Segment Addition Postulate

• Segment Congruence Postulate

• Linear Pair Postulate

• Definition of a Midpoint

By definition of a midpoint....

• LM + MN = LN

• LM = MN

• LN = LN

Tags

CCSS.HSG.CO.A.1

What does it mean to bisect?

RAY KM bisects ∠LKJ

• ∠LKM = ∠MKJ

• ∠LKM = 40°

• ∠LKM = ∠LKM

• ∠LKM + ∠MKJ + ∠LKJ

Tags

CCSS.HSG.CO.A.1

CCSS.HSG.CO.D.12

What is the reason that goes in the box with "?"

• Definition of a line segment

• Segment Addition Postulate

• Segment Congruence Postulate

• Given

Tags

CCSS.HSG.CO.A.1

Which property belongs in the "?" box?

• Definition of Segments

• Subtraction Property of Equality

• Segment Addition Postulate

• Segment congruence Postulate

• Given