Show Me! Given: OWINS is a parallelogram with ZW is a right angle. Prove: Z1, ZN, and ZS are right angles. Proof: Statements Reasons 1. 1. Given 2 ZW = 90 m 2. 3. 3. In a parallelogram, opposite angles are congruent. 4. m ZW = m ZN m Z1 = m ZS 4. 5. m ZN = 90 m 5. %3D 6. m ZW + m Z1 = 180 6. 7. 90+m 1= 180 7. 8. Reflexive Property 8. 9. 9 m Z1 90 10. Substitution (SN 4 and 9) 10. 11. 11. 21, ZN, and ZS are right angles. 12. Definition of rectangle. 12.

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Theorem 1. If a parallelogram has a right angle, then it has four right angles and the parallelogram
is a rectangle.
Show Me!
Given: OWINS is a parallelogram with
ZW is a right angle.
Prove: Z1, ZN, and ZS are right angles.
Proof:
Statements
Reasons
I.
1. Given
2. ZW = 90 m
2.
3.
3. In a parallelogram, opposite angles are
congruent.
4. m ZW = m ZN
m Z1 = m ZS
4.
5. m ZN = 90 m
5.
6. m ZW+ m Z1 = 180
7. 90+m 1= 180
7.
8.
8. Reflexive Property
9.
9. m Z1 = 90
10. Substitution (SN 4 and 9)
10.
11.
11. 21, ZN, and ZS are right angles.
12. Definition of rectangle.
12.
6.
Transcribed Image Text:Theorem 1. If a parallelogram has a right angle, then it has four right angles and the parallelogram is a rectangle. Show Me! Given: OWINS is a parallelogram with ZW is a right angle. Prove: Z1, ZN, and ZS are right angles. Proof: Statements Reasons I. 1. Given 2. ZW = 90 m 2. 3. 3. In a parallelogram, opposite angles are congruent. 4. m ZW = m ZN m Z1 = m ZS 4. 5. m ZN = 90 m 5. 6. m ZW+ m Z1 = 180 7. 90+m 1= 180 7. 8. 8. Reflexive Property 9. 9. m Z1 = 90 10. Substitution (SN 4 and 9) 10. 11. 11. 21, ZN, and ZS are right angles. 12. Definition of rectangle. 12. 6.
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