Indirect Proof

Indirect Proof

8th - 11th Grade

15 Qs

quiz-placeholder

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Indirect Proof

Indirect Proof

Assessment

Quiz

Mathematics

8th - 11th Grade

Medium

CCSS
8.G.A.5, HSG.SRT.B.5, HSG.CO.C.9

+12

Standards-aligned

Created by

Aqil Mohammed

Used 331+ times

FREE Resource

15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Proof involving indirect reasoning. Also called proof by contradiction

Direct reasoning

Indirect reasoning

Direct proof

Indirect Proof

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The first step of an indirect proof is to ____?
write the given
assume the negation of the given
assume the negation of what you are trying to prove
contradict the given

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The second step of an indirect proof is to ____?

assume the negation of the given

assume the negation of what you are trying to prove

conclude the prove is true

contradict the given using logical statements based on the initial assumption

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What assumption would you make to start the indirect proof of ∆ABC≅∆DEF?
∆ABC≠∆DEF
∆ABC≇∆DEF
<ABC≠<DEF
AB≅DE

Tags

CCSS.HSG.SRT.B.5

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What assumption would you make to start the indirect proof of AB≅BC?
AB≠BC
BA≅CB
B is the midpoint of AC
B is the perpendicular bisector oa AC

Tags

CCSS.HSG.CO.C.9

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What assumption would you make to start the indirect proof of:
 there can be only one 90 angle in a triangle
there can be more than one 90 angle in a triangle
<a+<b+<c=180
<a+<b+<c≠180
all the angles in a triangle add up to 180.

Tags

CCSS.8.G.A.5

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which statement is a contradiction of the statement XY≅RT?
XY<RT
TR≅YX
XY≈RT
XY≤RT

Tags

CCSS.8.G.A.2

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