josiedamon1
josiedamon1 josiedamon1
  • 12-04-2017
  • Mathematics
contestada

Find the m∠BAC, if m∠DEC = 45° and m∠EDC = 65°.
A 50 degrees
B 60 degrees
C 70 degrees
D 80 degrees

Find the mBAC if mDEC 45 and mEDC 65 A 50 degrees B 60 degrees C 70 degrees D 80 degrees class=

Respuesta :

Sxerks Sxerks
  • 12-04-2017
Answer: C - 70°

Proof: Since ED || CB and CD || AB, then
∠ACB = ∠CED (corresponding angles along parallel lines; BC || DE)
Also, ∠DCE = ∠BAC (corresponding angles along parallel lines; AB || CD)

Thus, ∠BAC = ∠DCE = 180 - (45 + 65) = 70° (ie C)
Answer Link
fredettemary88
fredettemary88 fredettemary88
  • 06-12-2019

Answer:

70 Degrees

Step-by-step explanation:

Find the m∠BAC, if m∠DEC = 45° and m∠EDC = 65°.

50°

60°

70°

80°

Odyssey

Answer Link

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