Given: ab || dc ∠a ≅ ∠d prove: δabc ≅ δdcb isabelle proves that the triangles are congruent by using the parallel lines to determine a second set of angles are congruent. what statement and reason could she have used?

answer: ∠acb=∠dbc [ alternate interior angles ]

or

∠abc=∠dcb [ alternate interior angles ]

step-by-step explanation:

if isabelle proves that the triangles are congruent by using the parallel lines to determine a second set of angles are congruent.

she will write a pair of alternate interior angles made by parallel lines and they are equal.

given: ab || dc

∠a ≅ ∠d

to prove: δabc ≅ δdcb

proof: - in δabc and δdcb

∠a ≅ ∠d [given]

cb=cb [common]

∠acb=∠dbc [ alternate interior angles ]

⇒δabc ≅ δdcb   [ sas congruence postulate]

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step-by-step explanation:

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,