Question

Diketahui segitiga PQR sama kaki dengan PQ = PR dan titik U adalah titik potong garis bagi QS dan RT. Jika besar <QPR=50°, besar <QUR adalah...​

Answer 1

<QUR = 105°

Penjelasan dengan langkah-langkah:

QPR = 50°

<PRQ = (180 - 50)° :2

= 130° : 2

= 75°

<QRT = 1/2 < PRQ

= 1/2 x 75°

= 37,5°

< RQS = < QRT = 37,5°

<QUR + <QTR + < RQS = 180° (segitiga)

<QUR + 37,5° + 37,5° = 180°

<QUR + 75° = 180°

<QUR = 180° - 75°

<QUR = 105°

Answer 2

<QUR = (1/2(180 - 50/2) + <RQS = 180°

= 1/2(130/2) + <RQS = 180°

= 1/2(75/1) + <RQS = 180°

= 1(37,5) + 37,5 = 180°

= 37,5 + 37,5 = 180°

= 75° = 180°

= (180 - 75)°

= 105°