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a)
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∡E≅∡A
Given in diagram
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EC=AC
Given in diagram
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∡BAC≅∡DCE
Given in diagram
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∡∆≅
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∆CAB≅∆CED
ASA≅
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b)
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EF=CB
Given in diagram
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∡F≅∡B
Given in diagram
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FG=BD
Given in diagram
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∆CBD≅∆EFG
SAS≅
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d)
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∡P≅∡S
Given in diagram
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∡Q≅∡T
Given in diagram
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∡PRQ≅∡SRT
Given in diagram
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∆PQR≅∆STR
AAA≅
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7-104)
