Geometry: An Interactive Journey to Mastery

Glossary

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hypotenuse of the right triangle is called the cosine of the angle and is denoted cos x.ͼ௘7KLVYDOXHPDWFKHV

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place. 6HHDOVRmapping.

HOOLSVHͼ௘௘ͽ: Given two points F and G in the plane, the set of all points P for which the sum of distances

FP + PG has the same constant value traces a curve called an ellipse. The points F and G are called the foci of

the ellipse.

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