### Combination of Tarapezoid and Partial Circles

#### Abstract

The are five problems including the trapezoid and partial circles obtained. For the first one the circumference of the black region numerically was obtained. In the problem 2 to 5 the circumference and area of different type of trapezoid and partial circles were obtained. Problems 2 and 3 are discussed numerically without the help of trigonometry. The problems of 4 and 5 are the circumference and the surface area were obtained as function of radius and Ɵ the angle as independent variables. Using trigonometry was helpful

#### Keywords

Trigonometry , Trapezoid and circles

#### Full Text:

PDF#### References

S. Lange, Geometry: A High School Course,2000.

N. Altshiller, College Geometry: An Introduction to the Modern Geometry of the Triangle and the Circle,1952.

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