# Math cards

The flashcards below were created by user Wordless123 on FreezingBlue Flashcards.

1. reflexive property is anything equal of congruent to itself.
AB=AB

ABm ~ AB
2. complementary angles are 2 angles with measures that have a sum of 90
if: angle 2 comp angle 4

then: the measure of angle 2 + the measure of angle 4= 90
3. if 2 lines are cut by transversal so that consecutive interior angles are supp then the lines are //
• if: <1 supplementary <2
• ___________1__/_________ l
• ___________2_/__________ m
• /
• /
• then: l // m
4. theorem 2.7- if <'s are comp to the same < or to ~ <'s then they are ~
• if: <1 is comp to <3 and <2 is comp to <3
• then: <1 is comp to <2

• if: <A is comp to <s
• <B comp <T
• <S supp <T

then: <A ~ <B
5. theorem 3.3- if 2 // lines are cut by a transversal then the alternate exterior < are ~
• if: A // B
• c
• ___________/_______ a
• __________/________ b
• /
• /
• then: <1 ~ <2
6. symetric property
• AB ~ BA
• also works for equals
7. supplementary angles are < with the measures that have a sum of 180
• if: <1 supp <3
• then: m<1 + m<3= 180

• if: m<1 + m<3=180
• then: <1 supp <3
8. a segment bisector intersects a segment at its midpoint
if: AB bisects XY

then: m is the midpoint of XY
9. a midpoint divides a segment into 2 ~ segments
• given: m is the midpoint of AB
• then: AM is ~ to MB
10. addition property if = are added to ='s the results are =
11. transitive property
• if: AB ~ CD
• EF ~ CD
• then: AB ~ EF
12. congruent segments are segments = in measure
if: AB ~ EG

• then: AB = EG
• *works the other way around also
13. an angle bisector divides an < into 2 ~ <'s
if: BD bisects <ABC

then: <ABD ~ <DBC
14. congruent <'s are <'s of the same measure
if: <ABC ~ <DEF

then: m<ABC = m<DEF

also works flipped.
15. theorem 2.8- is 2 <' are vertical < the they are ~
• \ /
• \ /
• 1 \ / 2
• / \
• / \
• then: <1 ~ <2
16. perpendicular lines are 2 lines that meet to form right angles
• if: AB is perp to CD
• then: <1 is a right angle
17. theorem 3.8- if 2 lines are perp to the same line they they are //
• L and M are parallel and A intersects them
• then: L is parallel to M
18. a right angle is an < whose measure = 90
• if: B is a right <
• then: the measure of <b is 90
• *works flipped becuase is a def
19. theorem 2.10- if 2 < at=re right < then they are ~
• if: < 1 is a rt<
• <2 is a rt <

then: <1 ~ <2
20. theorem 2.6- id <'s are supp to the same < or to congruent < then they are congruent
• if: <1 is supp to <3 and <2 is supp to <3
• then: <1 ~ <2

• if:<A is supp to <S
• <B is supp to <T
• <S is congruent to <T
• then: <A ~ <B
21. subtraction property is = re subtracted from ='s the measure of the whole is =
 Author: Wordless123 ID: 48238 Card Set: Math cards Updated: 2010-11-09 00:21:46 Tags: geometry Folders: Description: this is for 10th grade geo Show Answers: