A ruler, also called a middle ruler, has a precise straight edge and is used for measuring length and drawing. This kind of stationery is very common, almost every primary school student has one, which is usually used to measure short distances or draw straight lines.
Triangular rulers have three angles and three sides, and each pair of triangular rulers consists of two special right triangles. One is an isosceles right-angled triangular ruler, and the other is a right-angled triangular ruler with a special angle.
The protractor can draw angles, measure angles, draw vertical lines and parallel lines, and measure inclination, verticality and levelness. It can be opened and closed as an internal and external right-angle crutch, and can be used as a long and short ruler, which can be visually read out more accurately and draw a round inch with a specified size.
Details are as follows:
Rulers include straightedge, triangular ruler, tape measure, vernier caliper, spirit level, etc. Ruler: Rulers have precise straight edges, which are used for measuring length and drawing, and are widely used in mathematics, measurement, engineering and other disciplines.
Triangular ruler: Also known as triangular plate, it is a common drawing tool. Usually divided into right triangle or isosceles triangle, it is convenient to draw parallel lines or vertical lines. Tape measure: A tape measure is a tape measure made of varnished cloth. Made of soft cloth, mainly used for construction site measurement.
Time is like a ruler, which can measure the progress of the strugglers. Time is like a balance, which can measure the achievements of the strugglers. Time is like a whip, which can spur us to catch up with the goal of life. Time is like a war drum, which can inspire us to speed up our progress.
Time is a ruler, which can measure the progress of strugglers; Time is a balance, which can weigh the weight of the results of the strugglers; Time is a shuttle that can take us to the long river of history.
Always measure yourself with a ruler of honesty and insist on treating others with words and deeds of honesty. Pursuit is like a ruler, which can measure the progress of the strugglers; Pursuit is like a balance, which can weigh the achievements of the strugglers; Pursuit is like a whip, which can spur us to catch up with the goal of life; Pursuit is like a war drum, which can inspire us to speed up our progress.