Page 198 - IM_FL_Geometry_Print Sample

circumcenter
The circumcenter of a triangle is the intersection of all three perpendicular bisectors of the sides. It is the center of the circumscribed circle.
circumscribed circle
The circumscribed circle of a triangle is the circle that passes through all three vertices. Its center is the circumcenter.
complementary
Two angles are complementary to each other if their measures add up to . The two acute angles in a right triangle are complementary to each other.
congruent
One gure is called congruent to another gure if there is a sequence of translations, rotations, and re ections that takes the rst gure onto the second.
conjecture
A reasonable guess that you are trying to either prove or disprove.
converse
The converse of an if-then statement is the statement that interchanges the hypothesis and the conclusion. For example, the converse of "if it's Tuesday, then this must be Belgium" is "if this is Belgium, then it must be Tuesday."
corresponding
For a rigid transformation that takes one gure onto another, a part of the rst gure and its image in the second gure are called corresponding parts. We also talk about corresponding parts when we are trying prove two gures are congruent and set up a correspondence between the parts to see if the parts are congruent.
cosine
The cosine of an acute angle in a right triangle is the ratio (quotient) of the length of the adjacent leg to the length of the hypotenuse.
cross section
The gure formed by intersecting a solid with a plane.
cube root
The cube root of a number , written , is a number whose cube is , that is, .
cyclic quadrilateral
A quadrilateral all four of whose vertices lie on the same circle.
density
The mass or weight of a substance per unit volume
Unit 7 Glossary
125