2.
Bangun kubus mempunyai sisi sebanyak ....
Correct Answer
A. 6
Explanation
A cube has six sides, so the correct answer is 6.
3.
Bangun ruang dibawah ini yang mempunyai jumlah sisi 3 buah adalah ....
Correct Answer
A. Tabung
Explanation
The correct answer is Tabung. A tabung (cylinder) has three surfaces: two circular bases and one curved surface. The other shapes listed in the options do not have three surfaces. A kerucut (cone) has two surfaces, a bola (sphere) has only one surface, and a kubus (cube) has six surfaces. Therefore, the tabung is the only shape with three surfaces.
4.
Semua sisi kubus berbentuk ....
Correct Answer
A. Segiempat
Explanation
The correct answer is "Segiempat". A cube has six square faces, which are all examples of a segiempat or a quadrilateral with four sides and four angles.
5.
Jumlah rusuk yang dimiliki oleh balok adalah ....
Correct Answer
A. 12 rusuk
Explanation
The correct answer is 12 rusuk because a balok is a three-dimensional shape that has six faces, and each face is a rectangle. Each rectangle has four sides, so a balok has 4 x 6 = 24 edges. However, each edge is shared by two faces, so we divide 24 by 2 to get the total number of unique edges, which is 12. Therefore, a balok has 12 edges or rusuk.
6.
Dibawah ini yang tidak termasuk dalam sisi kubus di atas adalah ....
Correct Answer
A. DCFE
Explanation
The given options are all sides of the cube except for DCFE. This means that DCFE is not a side of the cube.
7.
Perhatikan pernyataan di bawah ini :
I) Mempunyai alas berbentuk segitiga
II ) Mempunyai jumlah sisi sebanyak 5
III ) Mempunyai 9 rusuk
IV) Mempunyai 8 titik sudut
Pernyataan yang benar mengenai sifat bangun prisma tegak segitiga ditunjukkan oleh nomor ....
Correct Answer
A. I, II dan III
Explanation
The correct answer is I, II, and III. This is because a right triangular prism has a triangular base (statement I), five faces (statement II), and nine edges (statement III). The statement IV, which says it has eight vertices, is incorrect because a right triangular prism has six vertices.
8.
Dibawah ini yang tidak termasuk sifat bangun balok adalah ....
Correct Answer
A. Mempunyai 10 titik sudut
Explanation
The statement "Mempunyai 10 titik sudut" is not a characteristic of a rectangular prism. A rectangular prism has 6 faces, 12 edges, and at least 4 rectangular sides. However, the number of vertices or points of a rectangular prism is 8, not 10.
9.
Bangun tabung memiliki dua sisi yang bentuknya sama di bagian alas dan tutupnya. Sisi tersebut berbentuk ....
Correct Answer
A. Lingkaran
Explanation
A tabung is a three-dimensional shape that has a circular base and a circular top. The sides of the tabung are curved and form a cylindrical shape. Since both the base and the top are circular, it can be concluded that the sides of the tabung are also circular. Therefore, the correct answer is "Lingkaran" which means "Circle" in English.
10.
Tabung mempunyai titik sudut sebanyak ....
Correct Answer
A. 0
Explanation
A tabung is a three-dimensional shape that has two circular bases and a curved surface connecting the bases. The curved surface of a tabung does not have any corners or angles, so the number of corners or angles in a tabung is 0.
11.
Sisi balok di atas yang berhadapan sisi GHLK adalah sisi ....
Correct Answer
A. IJNM
Explanation
The correct answer is IJNM because it is the only option that is opposite to the side GHLK. The other options do not have any common vertices or edges with GHLK.
12.
.
Gambar di atas merupakan gambar bangun ....
Correct Answer
A. Prisma Segitiga
Explanation
The image shown is a triangular prism. A prism is a solid figure with two parallel and congruent bases, and the sides are parallelograms. In this case, the bases are triangles, making it a triangular prism.
13.
Jumlah sisi pada bangun nomor 9 adalah ....
Correct Answer
A. 5
Explanation
The correct answer is 5 because the question asks for the number of sides in shape number 9. Since the number 9 represents a pentagon, which is a shape with 5 sides, the correct answer is 5.
14.
Gambar di atas merupakan jaring-jaring dari bangun ....
Correct Answer
A. Balok
Explanation
The given image represents a rectangular prism, also known as a rectangular cuboid or a box-shaped solid. The shape has six rectangular faces and all angles are right angles. Therefore, the correct answer is "balok" which translates to "rectangular prism" in English.
15.
Bangun lingkaran mempunyai simetri lipat berjumlah ....
Correct Answer
A. Tidak terhingga
Explanation
The correct answer is "Tidak terhingga" because a circle has an infinite number of fold symmetries. This means that no matter how many times you fold a circle, it will always match up perfectly with itself.
16.
Bangun datar yang mempunyai 2 simetri lipat adalah ....
Correct Answer
A. Persegi panjang
Explanation
A bangun datar yang mempunyai 2 simetri lipat adalah persegi panjang. A persegi panjang has two lines of symmetry, one vertical and one horizontal, which means that it can be folded in half along both of these lines and the two halves will perfectly overlap each other. This property makes the persegi panjang a shape with two lines of symmetry.
17.
Bangun datar di bawah ini yang tidak memiliki simetri lipat adalah ....
Correct Answer
A. Jajargenjang
Explanation
Jajargenjang tidak memiliki simetri lipat karena tidak dapat dilipat menjadi dua bagian yang sama persis. Simetri lipat terjadi ketika sebuah bangun datar dapat dilipat di sepanjang garis lipat sehingga kedua bagian yang terbentuk menjadi saling berhimpitan. Namun, jajargenjang memiliki dua pasang sisi yang sejajar namun tidak sama panjang, sehingga tidak mungkin untuk melipatnya menjadi dua bagian yang sama persis.
18.
Sumbu simetri bangun datar di atas berjumlah ....
Correct Answer
A. 1
Explanation
The given question is asking for the number of symmetry axes in the given flat shape. The correct answer is 1 because there is only one line of symmetry in the shape. This means that the shape can be divided into two equal halves by a single line passing through its center.
19.
Jumlah simetri putar bangun di atas adalah ....
Correct Answer
A. 3
Explanation
The correct answer is 3 because the question is asking for the number of rotational symmetries in the given figure. A rotational symmetry occurs when a figure can be rotated and still look the same in multiple positions. In this case, the figure has 3 rotational symmetries, meaning it can be rotated 120 degrees, 240 degrees, and 360 degrees and still appear unchanged.
20.
Banyaknya sumbu simetri pada segitiga samakaki adalah .....
Correct Answer
A. 1
Explanation
A scalene triangle has no lines of symmetry, while an isosceles triangle has exactly one line of symmetry. Therefore, a scalene triangle cannot be an isosceles triangle. Since a scalene triangle is not symmetrical, it does not have any lines of symmetry. Hence, the correct answer is 0.
21.
Pencerminan yang benar dari gambar trapesium di atas adalah ....
Correct Answer
A. C
Explanation
The correct answer is c because it accurately represents the trapezium shape shown in the image. The parallel sides are correctly drawn, and the non-parallel sides are slanted inward, forming a trapezium shape.
22.
.
Pencerminan yang tepat dari bangun layang-layang di atas terhadap garis horizontal adalah ....
Correct Answer
A. A
Explanation
The correct answer is a. The reason for this is that when a rhombus is reflected horizontally, the resulting image will still be a rhombus. In this case, the given shape is a rhombus, so when it is reflected horizontally, it will remain a rhombus.
23.
Pencerminan huruf F terhadap garis di atas yang benar adalah ....
Correct Answer
A. D
Explanation
The correct answer is d because when the letter F is reflected over the line, it appears as a mirror image of itself. The vertical line acts as the axis of symmetry, so the top and bottom parts of the F remain the same while the middle line flips to the opposite side.
24.
Sumbu simetri bangun di atas berjumlah ....
Correct Answer
A. 12
Explanation
The given question is asking for the number of symmetry axes in the shape shown above. A symmetry axis is a line that divides a shape into two identical halves. By examining the shape, we can see that there are multiple symmetry axes. We can draw a line vertically through the middle of the shape, dividing it into two equal halves. Additionally, we can draw lines diagonally from the top left corner to the bottom right corner, as well as from the top right corner to the bottom left corner, both of which also divide the shape into two equal halves. Therefore, there are a total of 12 symmetry axes in the shape.
25.
Gambar huruf di atas mempunyai simetri lipat sebanyak ....
Correct Answer
A. 1
Explanation
The image of the letter above has only one fold symmetry. This means that if the image is folded along a certain line, the two halves will perfectly overlap each other.