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Theorems
Theorems/Postulates
Vocabulary
Vocabulary Continued
100
If two parallel lines are cut by a transversal, then the alternate interior angles are congruent.
What is the alternate interior angles theorem
100
If two parallel lines are cut by a transveral, then the corresponding angles are congruent.
What is Corresponding Angles Postulate
100
two lines that are coplanar and do not intersect. The symbol for "is parallel to" is ll.
What is parallel lines.
100
Two angles that are formed by two lines and a transversal and that lie between the two lines on the same side of the transversal.
What is same-side interior angles.
200
If two parallel lines are cut by a transversal, then alternate exterior angles are congruent.
What is the alternate exterior angles theorem
200
A line that intersects two or more coplanar lines at different points.
What is a transversal.
200
The ___________ of an if-then statement is the statement formed by switching the hypothesis and the conclusion.
What is a converse?
300
If two parallel lines are cut by transveral, then same-side interior angles are supplementary
What is the same-side angles theorem
300
If two lines are perpendicular, then they intersect to form four right angles.
What is a theorem about perpendicular lines (Section 3.2)?
300
two angles that are formed by two lines and a transversal and occupy corresponding positions.
What is corresponding angles
400
All right angles are congruent
What is theorems about perpendicular lines (Section 3.2)
400
If two sides of adjacent (next to) acute angles are perpendicular, then the angles are complementary
What is a theorem related to perpendicular lines
400
two angles that are formed by two lines and a transversal and that lie between the two lines on opposite sides of the transversal.
What is alternate interior angles.
400
An image is created by "sliding" the original figure is called ___________.
What is a translation
500
If two lines intersect to form adjacent congruent angles, then the lines are congruent. ( Hint: Section 3.2)
What is theorems about perpendicular lines .
500
If two lines are parallel to the same line, then they are parallel to each other.
What is the parallel postulate
500
two angles that are formed by two lines and a transversal and that lie outside the two lines on opposite sides of the transversal.
What is alternate exterior angles.
500
The new figure AFTER the transformation is called the ___________.
What is an image