Our class learned about the various polygons and the angles, how to measure angles and also how to draw polygons only with the given lengths and angles.
The common properties of the all polygons are that all the polygons are surrounded by the lines, they all have the angles and they all do not have curves. Also, they all are have to be closed shapes and the two sides do not cross each other.
The angles are measured by the degrees, the full circle is 360°. The angles smaller than the 90° are called acute, bigger than 90° are obtuse, and bigger than 180° are called reflex. The angles such as 45°, 90° and 180° or others are called the benchmark angles. They are all the factors of 360°.
To estimate angle measures, you can use math tools like a protractor to measure or you can guess the angles in logical way. Such as using the complementary and supplementary angles. The complementary angle is the angle that add up to 90°, and the supplementary angle is the angle that add up to 180°.
To solve the problems that the given information is only words, you can use many ways to solve them. If the problem was like "What is this angle?", and gave the angle without how big the angle is, you can solve the problem like this. (↓)
We can use a protractor to measure the angles like this drawing below. (↓)
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