. Tìm ñaïo haøm rieâng caáp hai 2
''
x
z
cuûa haøm hai bieán
3 2 sin y
z xe x y y x

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?

Given: ae ≅ ce ; de ≅ be prove: abcd is a parallelogram. we have that ab || dc. by a similar argument used to prove that △aeb ≅ △ced, we can show that △ ≅ △ceb by. so, ∠cad ≅ ∠ by cpctc. therefore, ad || bc by the converse of the theorem. since both pair of opposite sides are parallel, quadrilateral abcd is a parallelogram.