Mathematics
Junior High
๐โโ๏ธๅ็ญใ้กใใใพใ๐โโ๏ธ
ใใฎๅ้กใฏใ๏ฝใbใๅฎ้ใซๆฐๅญใไปฃๅ ฅใใฆ่ใใพใใ๏ผ
่ใๆนใ่งฃ็ญใฎไปๆนใๆใใฆใใ ใใใ
ใกใชใฟใซ่จ่ฟฐๅผใฎ่งฃ็ญใงใใ
ใใฎๅ้กใฎ็ถใใฎ๏ผii๏ผใฎๅ้กใๆใใฆใใใ ใใใใงใ๐ญ๐ญ
ๆฌๅฝใซใ้กใใใพใ๐โโ๏ธ๐ฅบ
(5) AB=4acm, BC=56cm ใฎ้ทๆนๅฝข ABCD ใใใใ ็นP
ใฏBใๅบ็บใ, ็ง้26cm ใฎ้ใใง้ทๆนๅฝขใฎๅจไธใBโC
โDโAใฎ้ ใซ็งปๅใใฆ, Aใซๅฐ็ใใใๅๆญขใใใ
56cm
A
4acm
B
P->>
D
C
(i) a=bใฎใจใ, ็นPใBใๅบ็บใใฆใใ 4.5็งๅพใฎ
โณABP ใฎ้ข็ฉใ6ใ็จใใๆใ็ฐกๅใชๅผใง่กจใใ
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