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Published byOwen Chandler Modified over 4 years ago

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DEFINITIONS, POSTULATES, AND PROPERTIES Review HEY REMEMBER ME!!!!!!

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SEGMENT ADDITION POSTULATE If B is between A and C then AB + BC = AC

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ANGLE ADDITION POSTULATE If B is in the interior of ACD then: m ACB + m BCD = m ACD

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DEFINITION OF CONGRUENCE If then AB = CD

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DEFINITION OF AN ACUTE ANGLE Angle whose measure is between 0 and 90 degrees

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DEFINITION OF AN OBTUSE ANGLE Angle whose measure is between 90 and 180 degrees

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DEFINITION OF A RIGHT ANGLE Angle whose measure is 90 degrees

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DEFINITION OF A STRAIGHT ANGLE Angle whose measure is 180 degrees

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DEFINITION OF A MIDPOINT Point that divides a segment into two congruent parts

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DEFINITION OF AN ANGLE BISECTOR Ray that divides an angle into two congruent adjacent angles

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DEFINITION OF COMPLEMENTARY ANGLES 2 angles whose sum is 90

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DEFINITION OF SUPPLEMENTARY ANGLES 2 angles whose sum is 180

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DEFINITION OF PERPENDICULAR LINES If 2 lines are perpendicular then they form RIGHT angles.

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LINEAR PAIR POSTULATE If two angles form a linear pair, then they are supplementary.

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VERTICAL ANGLES THEOREM Vertical angles are congruent.

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NEW THEOREMS & POSTULATES

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RIGHT ANGLE CONGRUENCE THEOREM All right angles are congruent

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C ONGRUENT SUPPLEMENTS THEOREM If two angles are supplementary to the same angle (or to congruent angles) then they are congruent.

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CONGRUENT COMPLEMENTS THEOREM If two angles are complementary to the same angle (or to congruent angles) then they are congruent.

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