MSDE Geometry Activity: - mdk12
MSDE Geometry Activity: - mdk12
MSDE Geometry Activity: - mdk12
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Different Methods of Proof<br />
Justification Using Properties of Equality and Congruence (Continued)<br />
Supply the missing reasons for each of the following:<br />
11.<br />
Given: 15y + 7 = 12 - 20y<br />
1<br />
Conclusion: y =<br />
7<br />
Statement<br />
Reason<br />
1. 15y + 7 = 12 - 20y 1.<br />
2. 35y + 7 = 12 2.<br />
3. 35y = 5 3.<br />
4.<br />
1<br />
y = 4.<br />
7<br />
12.<br />
Given: m∠+ 1 m∠ 2 = 100<br />
m∠ 1=<br />
80<br />
Conclusion: m∠ 2=<br />
20<br />
Statement<br />
Reason<br />
1. m∠+ 1 m∠ 2 = 100<br />
1.<br />
2. m∠ 1= 80<br />
2.<br />
3. 80 + m∠ 2 = 100<br />
3.<br />
4. m∠ 2= 20<br />
4.<br />
HSA <strong>Geometry</strong> Activities <strong>Activity</strong> 5<br />
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