Use a two-column proof. theorem: proven statement Linear Pair Theorem: If two angles form a linear pair, then they are supplementary. October 01, 2010 theorem: proven statement Linear Pair Theorem: If two angles form a linear pair, then they are supplementary. 7. The Triangle Sum Theorem states that the three angles of a triangle have measures that sum to 180°. %PDF-1.3 4. After years of teaching Geometry I have realized that good proof worksheets are difficult to come by. Right Angle Congruence Theorem

Definition of Supplementary Angles

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A linear pair of angles is always supplementary. Linear Pair Theorem Linear Pair Theorem: If two angles are a linear pair (consecutive angles with a shared wall that create a straight line), then their measures will add to equal 180° Example: Given: Prove: ∠ + ∠ =180° Reasons ∠ & ∠ are a linear pair Given Standards: 1.0 Holt: 2-6 Geometric proof p.110 Linear Pair theorem 2‐6‐1 If two angles form a linear pair, then they are supplementary If: ∠A , ∠B form a Then: linear pair To prove the linear pair theorem and use it in other proofs as demonstrated by guided prac‐ This is a bit clunky. Practice questions In the following figure, at E. In the following questions, fill in … Properties of Parallelograms . Reason: Linear Pair Theorem D. Statement: ∠AGD and ∠DGB are supplementary. Supplementary angles sum to 180°; this means that m∠3+m∠4 = 180°. What is the next step in the given proof? q�G�s�}�[+f�t�4�����jt4�J뽅Ҡ���-�CP�ť硟Kи�͈e��t� ��a�ń?�1��N��sv���}ƮSL����א��x�-s\n��E7 This set of vectors is linearly dependent if and only if at least one of the vectors in this set is a linear combination of the other vectors in the set. Statement: ∠1≅∠8 and ∠2≅∠7 Reason: Congruent Supplements Theorem Statement: m∠3+m∠4=180° and m∠7+m∠8=180° Reason: Linear Pair Theorem Statement: m∠3+m∠5=180° and m∠4+m∠6=180° Reason: definition of supplementary angles Statement: ∠7≅∠6 and ∠8≅∠5 Reason: Vertical Angles Theorem Done If two straight lines intersect at a point and form a linear pair of equal angles, they are perpendicular. Creating new proofs can be tedious and time consuming. Next, we'll use a two-column proof to prove another theorem: Congruent Supplements Theorem—If two angles are supplementary to the same angle, then the two angles are congruent. 1 and 2 form a linear pair 1. 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