2-5 Proving Angles Congruent

# 2-5 Proving Angles Congruent - 2 angles whose measures have...

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Proving Angles Congruent Section 2-5

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Adjacent angles Angles in the same plane that have a common vertex and a common side, but no common interior points. 1 2
Vertical angles two angles whose sides form two pairs of opposite rays Vertical angles are congruent. (Vertical Angle Theorem 2-1) 3 4

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Linear pair adjacent angles whose noncommon sides are opposite rays The sum of the measures of the angles in a linear pair is 180. 5 6
Perpendicular lines special intersecting lines that form right angles Perpendicular lines intersect to form 4 right angles.

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Supplementary angles – 2 angles whose measures have a sum of 180 Complementary angles –

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Unformatted text preview: 2 angles whose measures have a sum of 90 Thm 2-2 - Congruent Supplements Theorem If two angles are supplements of the same angle ( or of congruent angles), then the two angles are congruent. Thm 2-3 – Congruent Complements Theorem If two angles are complements of the same angle ( or of congruent angles), then the two angles are congruent. Theorems 2-4 and 2-5 All right angles are congruent. If two angles are congruent and supplementary, then each is a right angle. Joke Time Why do bees have sticky hair? Because they have honeycombs. What goes Oh, Oh, Oh? Santa walking backwards...
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## This note was uploaded on 12/01/2011 for the course MATH 105 taught by Professor Towns during the Fall '10 term at BYU.

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2-5 Proving Angles Congruent - 2 angles whose measures have...

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