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# geo spelling test

### semester II

proportion an equation of the form a/b=c/d that states that two ratios are equivalent
similar polygons two polygons are similar if their corresponding angles are congruent and the measures of their corresponding sides are proportional
hypotenuse in a right triangle, the side opposite the right angle
anle of depression an angle formed when a person must look down from a tower or cliff to see an object below.
pythagorean theorem in a right triangle, the sum of the squares of the measures of the legs equals the square of the measure of the hypotenuse
angle of elevation the anle that is formed when a person must look up to see an object
sine in a right triangle, the ratio of the measure of the leg opposite the acute angle to the measure of the pypotenuse
cosine in a right triangle the ratio of the measure of the leg adjacent to the acute angle to the measure of the hypotenuse
tangent in a right triangle, the ratio of the measure of the leg opposite the acute angle to the measure of the leg adjacent to the acute angle
geometric mean for a ny positive numbers a and b, x= square route of ab
trigonometric ratio a ratio of the measures of two sides of a right triangle
arc of a chord a minor arc that has the same endpoints as a chord
concentric circles circles that lie in the same plane and have the same center
minor arc an arc of a circle that is between 0 and 180 degrees
central angle an angle whose vertex is the center of a circle
diameter a chord that contains the center of a circle
point of tangency the point of the intersection of a circle and a tangent to the circle
chord a segment whose endpoints are on the circel
Created by: jamesjett