Math. angles and 2D shapes. By seheon kim.
Angles: We learned about angles. The first one was acute angle. It means angles smaller than 90 degrees. 1~89 degrees. The next one was called right angle. It means 90 degrees. The next one is called obtuse angle. It means angles bigger than 90 degrees. 91~ 179 degrees. We learned so much. 2D shapes: We learned about all these different names for shapes. Even triangles have different names. For instance, a triangle that all sides are equal length is called an equilateral. A triangle with 2 same sides is called an isosceles. A triangle that all sides are different is called an scalene. There are varieties of shapes too. Like polygon,quadrilateral, parallelogram and many more. I did not know about all these shapes until now. I learned so many things!
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We are a Grade 4 class at an international school in Singapore.Archives
March 2020
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