4. Given AB L BD, ED 1 BD, ZABC ZEDC Prove ZCBD = ZCDB W STATEMENTS 1.40 185 ED & BD 2. ZAND is a night angle. ZEDN is s right angle 3. ABD 90" MEEDB-90 4. mABC+ CBD - 90° MEEDC ECDB <-90² 5. ABC ZEDC 6. mABCmZEDC 7. mABC mZCBD - MZEDC 2CDB REASONS 8 m2EDC+ CRD - EDC m2CDB 9. m2CBD m2CDB 10, ZCBD = 2CDB Given def of congruence

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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4. Given AB LBD, ED & BD, ZABC ZEDC
Prove ZCBD ZCDB
STATEMENTS
1. 40 L 85
ED L BD
2. ZARD is a right angle
ZEDM is s right angle
nên
LEDB-90
4. mABC+ CBD
<-90"
MZEDC MACDB
<-90"
5. ZAC ZEDC
6. mABC m2KDC
7. ABC+ m2CBD
MZEDC m2CDB
REASONS
8 m2EDC+ CRD
m2KDC m2CDB
9. MZCBD - m2CDB
10. ZCBD = ZCDB
Given
def of
congruence
Transcribed Image Text:4. Given AB LBD, ED & BD, ZABC ZEDC Prove ZCBD ZCDB STATEMENTS 1. 40 L 85 ED L BD 2. ZARD is a right angle ZEDM is s right angle nên LEDB-90 4. mABC+ CBD <-90" MZEDC MACDB <-90" 5. ZAC ZEDC 6. mABC m2KDC 7. ABC+ m2CBD MZEDC m2CDB REASONS 8 m2EDC+ CRD m2KDC m2CDB 9. MZCBD - m2CDB 10. ZCBD = ZCDB Given def of congruence
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