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
Theorem 6.16
The sum of the measure of the angles of any triangle is 180°
27
Theorem 6.17
If two of one triangle are congruent to two angles of another triangle, then the third angles are also congruent
28
Theorem 6.18
The acute angles of a right triangle are complementary
29
Theorem 6.19 SAA CONGRUENCE THEOREM
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
Theorem 6.20 ISOSCELES TRIANGLE THEOREM
In an isosceles triangle the two base angles are congruent.
31
Theorem 6.21
If two angles of a triangle are congruent, then the sides opposite those angles are congruent, and the triangle is an isosceles.
32
Theorem 6.22
A triangle is equilateral if and only if it is equiangular.