• Shuffle
Toggle On
Toggle Off
• Alphabetize
Toggle On
Toggle Off
• Front First
Toggle On
Toggle Off
• Both Sides
Toggle On
Toggle Off
Toggle On
Toggle Off
Front

### How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

Play button

Play button

Progress

1/43

Click to flip

### 43 Cards in this Set

• Front
• Back
 What is a theorem? A conjecture that is proven. A _____________ ________ of a segment contains the midpoint and forms right angles at the intersection perpendicular bisector Inductive Reasoning When you make conjectures from specific examples or patterns. If point B is in the interior of angle AOC, then the measure of angle AOB + the measure of angle BOC=the measure of the angle AOC. If angle AOC is a straight angle, then the measure of angle AOB + the measure of angle BOC=180. Postulate 1-8 Angle Addition Postulate Through any 2 points there is exactly 1 line. Postulate 1-1 Perpendicular lines form... right angles Supplementary angles are a pair of angles whose sum is... 180 degrees If 2 lines intersect, then they intersect in exactly 1 point. Postulate1-2 If 2 planes intersect, then they intersect in a line. Postulate 1-2 Vedrtical angles are... 2 angles whose sides are opposite rays. In a plane, lines either intersect or are... parallel Segments with the same length are... congruent What is a plane? A flat surface that extends in all directions without end. An _____ ________ divides an angle into 2 congruent andgles. angle bisector The process of reasoning logically from given facts to a conclusion. Deductive Reasoning Adjacent angles 2 coplanar angles that have a common side and a common vertex but no common interior poins. Congruent Complements If 2 angles are complements of congruent angles, then the 2 angles are congruent. an angle is formed by 2 rays with the same... end point The points of a line can be put into a one-to-one correspondence with the real numbers so that the distance between any 2 points in the absolute value of the difference of the corresponding numbers. Postulate 1-5 Ruler Postulate Points and lines in the same plane are... Coplaner What angle is 90 = (or) > x > 0 Acute angle Complementary angles are a paiir of angles whose sum is... 90 degrees Through any 3 noncollinear points there is exactly 1 plane. Postulate 1-4 What angle is 180 = (or) > x > 90? An obtuse angle 2 planes that do not intersect are... parallel 2 lines in space that are not parallel and do not intersect are... skew Coplanar Points and lines in the same plane. Angle bisector A ray that divides an agle inro 2 congruent angles. Conjectures A conclusion reached from observation of example or patterns. Conjectures are not always correct and should be verified. Points that lie on a line are... Collinear Let ray OA and ray OB be opposite rays in a plane. ray OA, ray OB, and all the rays with endpoint O that can be drawn on one side of line AB can be paired with the real numbers from 0-180 in such a way that: a) ray OA is paired with 0 and ray OB is paired with 180. b) If ray OC is paired with x and ray OD is paried with y, then the measure of angle COD=absolute value of x-y Postulate 1-7 Protractor Postulate If 3 points A,B,C are collinear and B is between A and C, then AB + BC = AC. Postulate 1-6 Segment Addition Vertical Angles Therem Vertical angles are congruent. A midpoint of a segment divides a segment into... 2 congruent segments Congruent Supplements If 2 angles are supplements of congrent angles, then the 2 angles are congruent. what is a straightedge? A ruler What is a postulate? An acceptted statement of fact Parallel planes Coplanar lines that do not intersect. Angles are measured in... degrees Angles with the same measure are... congurent Vertical angles are... congruent A straight angle is how many degrees? 180 What is a space? The set of all points.