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geo spelling test
semester II
Question | Answer |
---|---|
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 |