Find the unknown marked angles in each of the right-angled triangles.tolong bantu dong
1. Find the unknown marked angles in each of the right-angled triangles.tolong bantu dong
Jawab:
a. 180° - (90° + 57°)
180° - 147°
= 33°
b. ∠ABC = 180° - (90° + 28°)
= 180° - 118°
= 62°
∠ADC = 180° - {90° - (90° - 28°)}
= 180° - (90° + 62°)
= 180° - 152°
= 28°
c. ∠GEF = 180 - (90 + 26)
= 180 - 116
= 64
∠DEG = 90 - 64
= 26
2. Draw a sketch of pair of similar triangles, lable them. show their corresponding angles by the same signs. show the length of corresponding sides by numbers in proportion.
Penjelasan dengan langkah-langkah:
artinya ; Gambar sketsa sepasang segitiga serupa, beri label. tunjukkan sudut yang sesuai dengan tanda yang sama. tunjukkan panjang sisi yang sesuai dengan angka secara proporsional.
3. Sum of two angles 95 difference 25 angles
Jawaban:2x=95-25=70. ×=70/2=35.so 3 angles are 35,60,85. Yes D is correct answer as 60+35=95 and 60 _35=25 . This discussion on The sum of the two angles in a triangle is 95° and their difference is 25°.
Penjelasan: maaf kalo salah
4. the number of triangles on the figure above is
where the picture coeq ? :vpertanyaan gk masuk akal
5. 3. In the diagram, the sizes of two angles are marked.a What other angles are 105°?b What other angles are 75°?
Jawab:
a) 105⁰ = q⁰, r⁰, u⁰
b) 75⁰ = p⁰, s⁰, t⁰
Penjelasan dengan langkah-langkah:
105⁰ opposite with q⁰ so it's equal
105⁰ have same direction with r⁰ so it's equal
r⁰ opposite with u⁰ so it's equal too
For 75⁰ the explanation it's the same
6. calculate the sizes of the lettered angles
Jawab:
c = 204°a = 228°Penjelasan dengan langkah-langkah:
<c = 360° - (36° + 68° + 52°)= 360° - 156°
= 204°
<a = 360° - (42° + 90°)= 360° - 132°
= 228°
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DETAIL JAWABAN=====================================
Mapel : Matematika
Kelas : 7
Materi : Garis dan Sudut
Kata Kunci : Calculate the size of teh lettered angles, <c and <a
Kode Soal : 2
Kode Kategori : 7.2
7. What is the sum of all angles of a triangle?
jumlah dari seluruh sisi dari segitiga adalah 3.
semoga membantu ^_^
8. Painted on a wall are 4 red triangles, 2 blue triangles, 6 green triangles and 8 yellow triangles. What percentage of the triangles are blue or red?
Jawaban:
red : 20%
blue : 10%
Penjelasan dengan langkah-langkah:
4+2+6+8=20
red : 4/20=2/10=20%
blue : 2/20=1/10=10%
semoga membantu.
Penjelasan dengan langkah-langkah:
4 merah
2 biru
6 hijau
8 kuning
berjumlah = 20 segitiga
segitiga biru dan merah = 4+2 = 6
20 = 100%
1 = (100/20)%
1 = 5%
presentase segitiga biru dan merah :
= (5×6)%
= 30%
#cmiww
jangan lupa follow hehe
9. Characteristics of Triangles and Quadrilaterals is?
Jawaban:
triangle is a simple closed curve or polygon which is created by three line-segments. In Euclidean geometry, any three points, specifically non-collinear, form a unique triangle and separately, a unique plane (known as two-dimensional Euclidean space).
Penjelasan dengan langkah-langkah:
harus ada bintang 5
10. Apa terjemahan bahasa Indonesia dari: - Supplementary Angles - Complementary Angles - Corresponding Angles - Alternate interior Angles - Alternate exterior Angles - Opposite Angles
- Tambahan Angles
- Pelengkap Angles
- Angles korespondensi
- Alternatif interior Angles
- Angles eksterior Alternatif
- Angles Opposite
Maaf kalau salah.
11. calculate the sizes of the lettered angles.
c° : 96°d° : 56°
Penjelasan dengan langkah-langkah:
c°=180-60-24
=96
d°=180-90-34
=56
12. the sum of three angles of triangle of 180 deg. the sum of two of the angles is equal to the third angle and the difference of the two angles is equal to 2/3 the third angles find the angles of this triangle?
suppose that :
x = first angle
y = second angle
z = third angle
The sum of three angles of triangle of 180°
So :
x + y + z = 180
The sum of two of the angles is equal to the third angle
So :
x + y = z
The difference of the two angles is equal to 2/3 the third angles
So :
x - y = (2/3) z
subtitute x + y = z
x + y + z = 180
z + z = 180
2z = 180
z = 180/2
z = 90
x + y = z
x + y = 90
x - y = (2/3) z
x - y = (2/3) (90)
x - y = 60 >>> x = 60 + y
subtitute x = 60 + y
x + y = 90
60 + y + y = 90
60 + 2y = 90
2y = 90 - 60
2y = 30
y = 30/2
y = 15
x = 60 + y
x = 60 + 15
x = 75
We got :
x = 75
y = 15
z = 90
So, the angles are 75°, 15°, and 90°
13. A pattern has 5 blue triangles to every 80 yellow triangles. What is the ratio of blue Inangles to all triangles?
All triangles = 5 + 80 = 85
The ratio of blue : all triangles
= 5 : 85
Divide each by 5
= 1 : 17
14. A pattern has 12 blue triangles to every 16 yellow triangles. what is the ratio of yellow triangles to the blue triangles ?
Penjelasan dengan langkah-langkah:
12 di bagi 2 sama dengan 6
16 di bagi 2 sama dengan 8
jadi perbandingan nya adalah 6 banding 8
15. if the sum of interior angles is 9 times from the sum of exterior angles . find waht kind of poligon is the shape
The sum exterior angles always 360°
9 x 360° = 3240°
Sum of interior angles = (n - 2) x 180°
3240° = (n - 2) x 180°
n - 2 = 18°
n = 20°
The poligon is called icosagon.
16. A pattern has 12 blue triangles to every 16 yellow triangles. what is the ratio of yellow triangles to the blue triangles ?
total = 16 + 12 = 28
blue triangles = 12/28
= 3/7
yellow triangles = 16/28
= 4/7
ratio yellow to the blue triangles = 3/7 : 4/7
= 3/7 × 7/4
= 3/4
dont forget to make the smartest answer oke.
thanks
17. One fifth of the sum of two angles is 24 degree. Half of their difference is 14 degree. Find the two angles
74⁰ and 46⁰
cara dan jawabannya seperti di foto ya.
semangat belajar....
18. the sum of exterior angles from pentagon......
I assumed for your problem is a regular pentagon, then the sum of exterior angles from pentagon :
5 (180° - 108°)
= 5(72°)
= 360°
19. Apa yang dimaksud dengan: - Supplementary Angles - Complementary Angles - Corresponding Angles - Alternate interior Angles - Alternate exterior Angles - Opposite Angles
- sudut suplemen atau sudut yang berpelurus Sifat : Kalo dijumlahkan hasilnya 180 derajat - sudut komplemen atau berpenyiku Sifat : Kalo dijumlahkan hasilnya 90 derajat - saya gatau corresponding, maaaaf - sudut dalam bersebrangan Sifat : Besarnya sama - sudut luar bersebrangan Sifat : Besarnya sama - sudut bertolak belakang Sifat : Besarnya sama Maaf kalau salah
20. calculate the sizes of the lettered angles.
Jawaban:
c°=180°-(60+24)°=180°-84=96°
d°=180°-(34+90)°=180°-124°=56°
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