1. Pada segitiga PQR siku-siku di P. Jika besar sudut R=35 1/4 derajat, maka besar sudut Q= ... a. 54 3/4 derajat b. 55 1/4 derajat c. 55 2/4 derajat d. 55 3/4 derajat 2. Besar sudut sebuah segitiga masin-masing 32 derajat & 54 derajat. Besar sudut yang ketiga adalah ... a. 84 b. 86 c. 94 d. 104 3. Pada segitiga siku-siku sudut A : sudut C= 2:3,. Besar sudut A= ... a. 54 b. 48 c. 42 d. 36 4. Diketahui segitiga KLM siku-siku di K dengan sudut L=(2y +17) dan sudut M=(y + 4). Besar sudut M= ... a. 23 b. 27 c. 54 d. 63 5. Diketahui segitiga ABC sama kaki dengan AB=BC. Jika besar sudut B=50, maka besar sudut A= ... a. 40 b. 50 c. 65 d. 80
lkimmyung
1. 90˚+35 1/4˚ + x = 180˚ ^141/4˚ + x = 180˚-90˚ 141/4 ˚+ x = 90˚ x = 90˚ - 141/4 x = 360/4 - 141/4 x = 219/4 x = 54 3/4 jawaban = a. 54 3/4
2. 54˚+32˚+ x = 180˚ 86˚+ x = 180˚ x = 180˚ - 86˚ x = 94˚ jawaban = c
3. 2x + 3x + 90˚ = 180˚ 5x = 180˚ - 90˚ 5x = 90˚ x = 90˚/5 x = 18˚ ∠A = 2 . x = 2 . 18˚ = 36˚ jawaban = c
4. 2y + 17˚ + y + 4˚ = 90˚ 3y + 21˚ = 90˚ 3y = 90˚-21˚ 3y = 69˚ y = 69˚/3 y = 23˚ ∠M = y + 4˚ = 23˚ + 4˚ = 27˚ jawaban = b
5. 50˚ + 50˚ + x = 180˚ 100˚ + x = 180˚ x = 180˚ - 100˚ x = 80˚ jawaban = d
^141/4˚ + x = 180˚-90˚
141/4 ˚+ x = 90˚
x = 90˚ - 141/4
x = 360/4 - 141/4
x = 219/4
x = 54 3/4
jawaban = a. 54 3/4
2. 54˚+32˚+ x = 180˚
86˚+ x = 180˚
x = 180˚ - 86˚
x = 94˚
jawaban = c
3. 2x + 3x + 90˚ = 180˚
5x = 180˚ - 90˚
5x = 90˚
x = 90˚/5
x = 18˚
∠A = 2 . x
= 2 . 18˚
= 36˚
jawaban = c
4. 2y + 17˚ + y + 4˚ = 90˚
3y + 21˚ = 90˚
3y = 90˚-21˚
3y = 69˚
y = 69˚/3
y = 23˚
∠M = y + 4˚
= 23˚ + 4˚
= 27˚
jawaban = b
5. 50˚ + 50˚ + x = 180˚
100˚ + x = 180˚
x = 180˚ - 100˚
x = 80˚
jawaban = d