

kesebangunan
Presentation
•
Mathematics
•
1st Grade
•
Hard
Sri Pangastuti
FREE Resource
5 Slides • 2 Questions
1
By Sri Pangastuti SMPN 11 Malang
2
Segitiga-segitiga yang sebangun
Syarat dua segitiga sebangun.
1. Sudut – sudut yang bersesuaian pada kedua segitiga sama besar.
2. Perbandingan panjang sisi – sisi yang bersesuaian harus sama besar.
Subject | Subject
Some text here about the topic of discussion
3
Akan ada 3 rumus yang akan kita pelajari kali ini. Perhatikan gambar segitiga berikut ini:
Sebuah segitiga siku – siku ABC dengan sudut siku – siku di B dan memiliki sebuah sebuah garis tinggi pada sisi AC dan titik siku – siku lainnya di D. Bila diperhatikan ada dua buah segitiga yang membentuk segitiga ABC ini. Bisa segitiga ABC dan BDC, atau segitiga ABC dan segitiga ABD, atau juga segitiga ADB dan segitiga BDC. Semuanya akan memiliki rumus kesebangunan yang berbeda-beda.
Subject | Subject
Some text here about the topic of discussion
4
Some text here about the topic of discussion.
Akan ada 3 rumus yang akan kita pelajari kali ini. Perhatikan gambar
BD2 = AD x CD
AB2 = AD x AC
BC2 = CD x CA
5
Some text here about the topic of discussion.
Contoh soal :
Perhatikan gambar di samping!
Diketahui panjang SR adalah 8 cm.Tentukan panjang QS!
PR2 = RS x RQ
102 = 8 x RQ
100 = 8 x RQ
RQ = 100/8
RQ = 12,5
SR = RQ - RS = 12,5 - 8 = 4,5
6
Multiple Choice
Perhatikan gambar segitiga disamping!
Segitiga ABC siku-siku di A. Panjang BD = 7 cm dan DC = 4 cm. Panjang AB = ...
11
28
44
77
7
Multiple Choice
Segitiga ABC siku-siku di A. Panjang AB = 9,
BD : DC = 1 : 2. Panjang AD adalah ....
81
27
8
3
By Sri Pangastuti SMPN 11 Malang
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