Mathematics
Junior High
๐๐๐๐๐ปโโ๏ธ
3็ชใฎ1ใป2ใป3ใป4ใๆใใฆใใ ใใ๐โโ๏ธ
ๅ็ญใจ่งฃ่ชฌใ่ผใใฆใใใใใใใใใใใงใ๐ฆ
ใใใใใ้กใใใพใ
3
ๅณใฎๅณ1ใฎใใใช, AD=4cm,BC=8cm,
โณADC=โ DCB=90ยฐใฎๅฐๅฝขABCDใใใใ
็นPใฏ้ ็นAใๅบ็บใใฆ, ่พบAD, DCไธใๆฏ็ง
1cmใฎ้ใใง็งปๅใใ้ ็นCใซ็ใใใจใใใง
ๆญขใพใใ ๅณ2ใฏ, ็นPใ้ ็นAใๅบ็บใใฆใใx
็งๅพใฎโณPBCใฎ้ข็ฉใycmยฒใจใใฆ xใจyใฎ้ข
ไฟใใฐใฉใใซ่กจใใใใฎใงใใใ ็นEใฎyๅบงๆจใฏ
24ใงใใใ
A
(1) ๅณ2ใง,็นFใฎๅบงๆจใๆฑใใใ
B
C
(2) ๅณ1ใง, ่พบDCใฎ้ทใใฏไฝcmใ, ๆฑใใใ
-8cm-
(3) ๅณ2ใง,็ด็ทFGใฎๅผใๆฑใใใ
APBCใฎ้ข็ฉใๅฐๅฝขABCDใฎ้ข็ฉใฎๅๅใซใชใใฎใฏ็นPใ้ ็นAใๅบ็บใใฆใใไฝ็งๅพใๆฑใใใ
ๅณ1
4cm.
Pโ
B
ๅณ2
ใปY
E
F
Gl
8
Answers
Were you able to resolve your confusion?
Users viewing this question
are also looking at these questions ๐
