When two lines intersect, the angles that are opposite each other are ________ angles. (p. 155)
Recall that the _____________ Theorem states that for a right triangle with legs of length a and b and hypotenuse of length c, a^2 + b^2 = c^2. (p. 187)
Alternate Interior Angles _______: If two parallel lines are cut by a transversal, then the pairs of alternate interior angles have the same measure. (p. 164)
By using geometric relationships along with a compass and a straightedge, you can _________ geometric figures with greater precision than figures drawn with standard measurement tools. (p. 185)
______________ Bisector Theorem: If a point is on the _____________ bisector of a segment, then it is equidistant from the endpoints of the segment. (p. 186)
When two lines intersect, the angles that are on the same side of a line form a(n) ______ pair. (p. 155)
_____________ angles are two angles whose measures have a sum of 180°. (p. 158)
_____________ angles are two angles whose measures have a sum of 90°. (p. 158)
In a(n) ________ proof, you assume that the statement you are trying to prove is false. Then you use logic to lead to a contradiction of given information, a definition, a postulate, or a previously proven theorem. (p. 187)
____-side interior angles lie on the ____ side of the transversal and between the intersected lines. (p. 163)
If two angles are vertical angles, then the angles are __________. (p. 156)
Alternate ________ angles lie on opposite sides of the transversal and outside the intersected lines. (p. 163)
Same-Side Interior Angles _________: If two parallel lines are cut but a transversal, then the pairs of same-side interior angles are supplementary. (p. 164)
_________ interior angles are nonadjacent angles that lie on opposite sides of the transversal between the intersected lines. (p. 163)