Kedua-duanya ada empat sisi lurus dan empat bucu. Semua sisi segi empat sama sama panjang, manakala sisi bertentangan segi empat tepat sama panjang.
Langkah 1
Segi empat sama dan segi empat tepat
Kedua-duanya ada empat sisi lurus dan empat bucu. Semua sisi segi empat sama sama panjang, manakala sisi bertentangan segi empat tepat sama panjang.
□ 4 sisi sama · ▭ sisi bertentangan sama
segi empat sama · segi empat tepat = 正方形、长方形 两种都有 4 条直边和 4 个顶点。正方形 4 条边一样长；长方形是相对的两边一样长。用尺子量边就能分辨。 例子：门、书的封面和手机屏幕的形状都是长方形，地砖常常是正方形。 注意：长方形斜着放还是长方形，不要因为方向改变就叫错名字。
segi empat sama · segi empat tepat = square and rectangle Both have 4 straight sides and 4 vertices. A square has all 4 sides equal; a rectangle has opposite sides equal. Measuring the sides with a ruler tells them apart. Example: a door and a phone screen are rectangles, and many floor tiles are squares. Watch out: a rectangle turned at a slant is still a rectangle, so do not rename it.
Langkah 2
Segi tiga
Segi tiga mempunyai tiga sisi lurus dan tiga bucu.
△ → 3 sisi lurus · 3 bucu
segi tiga = 三角形 三角形有 3 条直边和 3 个顶点。不管是尖尖的、扁扁的还是歪的，只要是 3 条直边围起来，就是三角形。 例子：一块切成三角形的三明治有 3 条直边和 3 个尖角。 注意：三条边要首尾相连围起来，有缺口就不算三角形。
segi tiga = triangle A triangle has 3 straight sides and 3 vertices. Whether it is pointy, flat or leaning, any shape closed by 3 straight sides is a triangle. Example: a sandwich cut into a triangle has 3 straight sides and 3 corners. Watch out: the three sides must join end to end; a shape with a gap is not a triangle.
Langkah 3
Bulatan
Bulatan mempunyai satu sisi melengkung dan tidak mempunyai bucu atau sisi lurus.
bulatan = circle A circle has one curved side and no vertices or straight sides. Every point on it is the same distance from the centre, which makes it perfectly round. Example: 3 coins and 2 bottle caps on a table show 3 + 2 = 5 circles. Watch out: an oval also has a curved side, but it is squashed, so it is not a circle.
Semak cepat · Soalan 1 / 2
Cuba sendiri
Pilih jawapan. Jika belum tepat, baca petunjuk dan cuba lagi.
Bentuk dengan 4 sisi sama panjang dan 4 bucu ialah…
4 sisi sama panjang = 4 sides of equal length The question gives three clues: 4 sides, all of them the same length, and 4 vertices. First rule out shapes with the wrong number of sides, then check whether every side is equal. Example: a shape with four 5 cm sides measures 5 + 5 + 5 + 5 = 20 cm around. Watch out: a rectangle has 4 sides too, but they are not all the same length.
Semak cepat · Soalan 2 / 2
Cuba sendiri
Pilih jawapan. Jika belum tepat, baca petunjuk dan cuba lagi.
Bentuk dengan 3 sisi lurus dan 3 bucu ialah…
3 sisi lurus dan 3 bucu = 3 条直边和 3 个顶点 题目问：有 3 条直边和 3 个顶点的平面图形叫什么。方法：用手指沿着边走一圈，每到一个角就数一个顶点。 例子：两个这样的图形，顶点共 3 + 3 = 6 个。 注意：边要是直的才算 sisi lurus，弯的边不算。
3 sisi lurus dan 3 bucu = 3 straight sides and 3 vertices The question asks for the name of the flat shape with 3 straight sides and 3 vertices. Trace around the edge with your finger and count one vertex at every corner. Example: two such shapes have 3 + 3 = 6 vertices altogether. Watch out: only straight sides count as sisi lurus; a curved side does not.
Ringkasan
Syabas!
Kamu telah belajar tentang Kenal Pasti Bentuk 2d.
Ingat: segi empat sama dan segi empat tepat; segi tiga; bulatan.
