Lukis Bentuk 2d

sisi lurus = 直边
画平面图形时，先点出所有顶点，再用尺子把相邻的点连起来，边才会直。徒手画的线常常会歪。
例子：画正方形时，先点出 4 个顶点，再用尺子连起来，每条边都要一样长。
注意：连线时尺子要刚好压过两个点，不然边的长度会变。

sisi lurus = straight side
To draw a flat shape, mark all the vertices first, then join neighbouring points with a ruler so the sides are straight. Lines drawn freehand often wobble.
Example: to draw a square, mark 4 vertices first, then join them with a ruler so every side is equally long.
Watch out: the ruler edge must pass exactly through both dots, or the side length changes.

kertas petak · kertas titik = 方格纸、点阵纸
在方格纸或点阵纸上画图，可以数格子来决定边长和顶点的位置，画出来的边又直又准。
例子：在方格纸上画长 5 格、宽 2 格的长方形，先数出 4 个顶点的位置再连线。
注意：数格子时从顶点开始数，不要把起点那一格多算进去。

kertas petak · kertas titik = grid paper and dot paper
On grid or dot paper, counting squares or dots fixes the length of each side and the position of each vertex, so sides come out straight and exact.
Example: on grid paper, draw a rectangle 5 squares long and 2 squares wide by finding its 4 vertices first.
Watch out: start counting from the vertex and do not count the starting point as an extra step.

surih permukaan = 描出面的形状
立体物品平平的面可以放在纸上，用铅笔沿着边描一圈，就得到平面图形。罐头底描出圆形，盒子的面描出正方形或长方形。
例子：描 2 个罐头底和 1 个盒子面，得到 2 + 1 = 3 个图形。
注意：描的时候物品要按稳，铅笔要贴着边走。

surih permukaan = trace a face
A flat face of a 3D object can be placed on paper and traced around with a pencil to make a 2D shape. The bottom of a tin gives a circle; the face of a box gives a square or rectangle.
Example: tracing 2 tin bottoms and 1 box face gives 2 + 1 = 3 shapes.
Watch out: hold the object still and keep the pencil tight against its edge.