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By: Takelia Rayborn 4/2/13 Block 6 Ms. Howell’s class Table of Contents Page 1- Parallel Lines Page 2- Two Congruent Objects Page 3- Vertical Angles Page4- Perpendicular Lines Page 5- Sine Page 6-Cosine Page 7- Tangent Page 8-Adjacent Page9- Similarity Page 10- Secant Page 11-Amplitude Page 12- Cotangent Page 13- Diameter Page 14- Cosecant Page 15- Period Parallel Lines Parallel lines are lines that will go on and on forever without ever intersecting. If there wasn’t any parallel streets there will be a lot of confusion and accidents. Two Congruent Objects Two objects are congruent if they have the same dimensions and shape. If the shape didn’t have two congruent objects then the shape would have one side that’s longer and the other side smaller. Vertical Angles Vertical angles are the angles opposite each other when two lines cross. I think the person who created the pictures vertical angles to ensure that the costumes had a very enjoyable time on the ride. Also to attract thereal seekers who love high heights. Perpendicular Lines Perpendicular lines are lines that are at right angles (90°) to each other. Two non-perpendicular lines form obtuse angles (greater than 90 degrees) or acute angles (less than 90 degrees). Sine The length of the opposite side divided by the length of the hypotenuse. The sine function is a function of an angle. In a right triangle, sine gives the ratio of the length of the side. Cosine The length of the adjacent side divided by the length of the hypotenuse. The cosine function has a number of properties that result from it being periodic and even. Tangent Making contact at a single point or along a line; touching but not intersecting. The tangent function where sin x is the cine function cos x and is the cosine function. The notation tg x is sometimes also used (Gradshteyn and Ryzhik 2000, p. xxix). Adjacent Two angles that share a common side and a common vertex ,but do not overlap. Similarity The quality or condition of being similar; resemblance. Secant Secant is the straight line cutting curve: a straight line that intersects with a curve in two or more places. Amplitude Amplitude is the state or quality of being ample, especially as to breadth or width; largeness; greatness of extent. Cotangent Cotangent is a ratio of adjacent to opposite side: for a given angle in a right triangle, a trigonometric function equal to the length of the side adjacent to the angle divided by that of the side opposite the angle. Diameter Diameter is a line through center of circle: a straight line running from one side of a circle or other rounded geometric figure through the center to the other side, or the length of this line. Cosecant Cosecant is a ratio of hypotenuse to opposite side: for a given angle in a right triangle, a trigonometric function equal to the length of the hypotenuse divided by that of the side opposite the angle. Period An interval of time characterized by the occurrence of a certain condition, event, or phenomenon: a period of economic prosperity.