9th
-
10th
grade

Mathematics

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accuracy

392

plays

5 years

Mathematics

9th -

10thgrade

Triangle Sum Theorem Proof

392
plays

8 questions

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1. Multiple Choice
1 minute
1 pt
In the formal proof of the triangle sum theorem, the triangle is always formed between ________________________.
perpendicular lines
parallel lines
intersecting lines
a bunch of points
2. Multiple Choice
1 minute
1 pt
Each of the following relationships or properties is critical to proving the Triangle Sum Theorem EXCEPT _________.
$\parallel\rightarrow$ alternate interior angles are $\cong$
Substitution Property
Angle Addition Postulate
Linear Pair Property
3. Multiple Choice
2 minutes
1 pt
Fill in statement #2.
$m\angle6+m\angle2+m\angle3+m\angle5=360$
$m\angle1+m\angle4=m\angle6$
$m\angle1+m\angle2+m\angle3=180$
$m\angle1+m\angle4+m\angle7=180$
4. Multiple Choice
2 minutes
1 pt
Fill in statement #3.
$m\angle7=m\angle2$
$m\angle1=m\angle6$
$m\angle1=m\angle3$
$m\angle4=m\angle5$
5. Multiple Choice
2 minutes
1 pt
Fill in reason #3.
$\parallel\rightarrow$ corresponding angles are $\cong$
Substitution Property
$\parallel\rightarrow$ alternate interior angles are $\cong$
Transitive Property
6. Multiple Choice
2 minutes
1 pt
Fill in statement #4.
$m\angle7=m\angle4$
$m\angle1=m\angle6$
$m\angle1=m\angle3$
$m\angle4=m\angle3$
7. Multiple Choice
2 minutes
1 pt
Fill in reason #4.
$\parallel\rightarrow$ alternate interior angles are $\cong$
Substitution Property
$\parallel\rightarrow$ corresponding angles are $\cong$
Reflexive Property
8. Multiple Choice
2 minutes
1 pt
Fill in reason #5.
Triangle Sum Theorem
Substitution Property
Prove
Reflexive Property
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Triangle Sum Theorem Proof

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