Use your protractor to construct an equilateral triangle.
用量三形。
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And he didn't use a protractor to make those perfect letters or any other kind of measurements.
他没有使用量器或任何其他的测量方式来做出那些完美的字。
Angles are usually measured using protractors.
通常用量器进行测量。
Protractors have markings on them, similar to rulers, but instead of inches or centimeters it measures in degrees.
量器上有何直尺类似的刻,但是其刻不是英寸或者是厘米,而是以来衡量。
If you don't have a protractor to measure with, you can estimate how big it is as long as you remember what a 90 degree angle, 180 degree angle, and 360 degree angle look like.
如果你没有量器,你可以估计它有多大,只要你记得 90 ,180 和 360 是什么样子的就行了。
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