6. AB is a straight line <ADB & <CDB are Linear Pairs are supplementary supplementary Picture Given Statement Reason 7. is ML MN Isosceles 2 sides are congruent and ∆LMN ≅ ∆ base angles are congruent isosceles LN <MLN <MNL ≅ is the base 8. LM MN <MLN <MNL When 2 sides are congruent the angles ≅ ≅ opposite those sides are also congruent Converse also true if two angles are ≅ the sides opposite them are congruent 9. <1 <1 Reflexive 10. <1 <3 <2 <2 Reflexive <ABE <CBD Addition <ABE <CBD <2 <2 Reflexive <ABE <CBD Subtraction 11. AB CD AB EF Transitive EF CD 1. For each pair of triangles, tell which triangles can be proven congruent (if at all) and by what method. A B C D ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 2. Given: is the median to , is the median to . (WHAT IS A MEDIAN?) Prove:
6. AB is a straight line <ADB & <CDB are supplementary Linear Pairs are supplementary Picture Given Statement Reason 7. ∆LMN is isosceles LN is the base ML ≅ MN <MLN ≅ <MNL Isosceles ∆ 2 sides are congruent and base angles are congruent 8. LM ≅ MN <MLN ≅ <MNL When 2 sides are congruent the angles opposite those sides are also congruent Converse also true if two angles are ≅ the sides opposite them are congruent 9. <1 <1 Reflexive 10. <1 <3 <ABE <CBD <2 <2 <ABE <CBD <2 <2 <ABE <CBD Reflexive Addition Reflexive Subtraction 11. AB CD EF CD AB EF Transitive 1. For each pair of triangles, tell which triangles can be proven congruent (if at all) and by what method. A B C D ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 2. Given: is the median to , is the median to . (WHAT IS A MEDIAN?) Prove:
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