Theorems Flashcards

0
Q

Theorem 4.2

A

If two angles are adjacent and supplementary, then they form a linear pair

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1
Q

Theorem 4.1

A

All angles are congruent

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2
Q

Theorem 4.3

A

Angles that form a linear pair are supplementary

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3
Q

Theorem 4.4

A

If one angle of a linear pair is a right angle, then the other angle is also a right angle

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4
Q

Theorem 4.5 VERTICAL ANGLE THEOREM

A

Vertical angles are congruent

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5
Q

Theorem 4.6

A

Congruent supplementary angles are right angles

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6
Q

Theorem 4.7 ANGLE BISECTOR THEOREM

A

If ->AB bisects /_ CAD, then m/_CAB=1/2m/_CAD

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7
Q

Theorem 5.1

A

The conditional p->q, is equivalent to the disjunction ~p or q

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8
Q

Theorem 5.2 CONTRAPOSITVE RULE

A

A conditional statement is equivalent to its contrapositve. In other words, p->q is equivalent to ~q->~p

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11
Q

Theorem 6.1 CONGRUENT SEGMENT BISECTOR THEOREM

A

If two congruent segments are bisected, then the four resulting segments are congruent

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12
Q

Theorem 6.2

A

Segment congruence is an equivalence relation

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13
Q

Theorem 6.3

A

Supplements of congruent angles are congruent

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14
Q

Theorem 6.4

A

Complements of congruent angles are congruent

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15
Q

Theorem 6.5

A

Angle congruence is an equivalence relation

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16
Q

Theorem 6.6 ADJACENT ANGLE SUM THEOREM

A

If two adjacent angles are congruent to another pair of adjacent angles formed are congruent

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17
Q

Theorem 6.7 ADJACENT ANGLE PORTION THEOREM

A

If two angles, one in each of two pairs of adjacent angles, are congruent, and the larger angles formed are also congruent, then the other two angles are congruent with

18
Q

Theorem 6.8 CONGRUENT ANGLE BISECTOR THEOREM

A

If two congruent angles are bisected, the four resulting angles are congruent

19
Q

Theorem 6.9

A

Triangle congruence is an equivalence relation

20
Q

Theorem 6.10

A

Circle congruence is an equivalence relation

21
Q

Theorem 6.11

A

Polygon congruence is an equivalence relation

22
Q

Theorem 6.12 ALTERNATE EXTERIOR ANGLE THEOREM

A

Two line intersected by a transversal are parallel of and only if the alternate exterior angles are congruent.

23
Q

Theorem 6.13 CORRESPONDING ANGLE THEOREM

A

Two lines intersected by a transversal are parallel if and only if the corresponding angles are congruent.

24
Q

Theorem 6.14

A

If a transversal is perpendicular to one of the two parallel lines, then it is perpendicular to the other one also.

25
Q

Theorem 6.15

A

If two coplanar lines are perpendicular to the same line, then they are parallel to each other.

26
Q

Theorem 6.16

A

The sum of the measure of the angles of any triangle is 180°

27
Q

Theorem 6.17

A

If two of one triangle are congruent to two angles of another triangle, then the third angles are also congruent

28
Q

Theorem 6.18

A

The acute angles of a right triangle are complementary

29
Q

Theorem 6.19 SAA CONGRUENCE THEOREM

A

If two angles of a triangle and a side opposite one of the two angles are congruent to the corresponding angles and a side of another triangle, then the two triangles are congruent.

30
Q

Theorem 6.20 ISOSCELES TRIANGLE THEOREM

A

In an isosceles triangle the two base angles are congruent.

31
Q

Theorem 6.21

A

If two angles of a triangle are congruent, then the sides opposite those angles are congruent, and the triangle is an isosceles.

32
Q

Theorem 6.22

A

A triangle is equilateral if and only if it is equiangular.