Triangles are used because if you have a triangle you can use the cosine and sine rules. Since you're asking this question you're probably a student all question will be of that form because it's easy for textbooks and teachers.There is also I believe a parallelogram rule but I'm only a student too so i haven't learnt it.
If you draw your triangles using the centre of the circle as one vertex and two more on the circumference, the area of the circle is approximately equal to the sum of the areas of the triangles; the smaller you make the triangles, the more accurate your result will be.
you are not resolving this issue. Your sentence is not reasoning at all.
buildings use triangles because they nned to shape the roof
a pyramid can use any triangles possible.
Right angle triangles.
Right angle triangles
Assuming that you have to use all the rectangles, you have a few options:1x453x155x9Therefore, you are able to make three different rectangles.
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Rectangles and circles.Rectangles and circles.Rectangles and circles.Rectangles and circles.
Architects use triangles as part of their work in designing buildings. And finding the pygratheim therom and stuff.
You can use ratios of adjacent sides to prove if two rectangles are similar by comparing to see if the ratios are the same
You could use the Pythagorean Theorem and many triangles You could use the Pythagorean Theorem and many triangles