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omeli [17]
4 years ago
15

Find the m A)50 degrees B)60 degrees C)70 degrees D)80degrees

Mathematics
2 answers:
Licemer1 [7]4 years ago
8 0

Answer:

Step-by-step explanation:

∠DEC + ∠EDC + ∠ECD = 180  {angle sum property of triangle}

45 + 65 + ∠ECD = 180

110 +∠ECD = 180

∠ECD = 180 - 110

∠ECD = 70°

AB // CD and AE transversal

∠BAC = ∠ECD    {Corresponding angles are equal}

∠BAC = 70°

lara31 [8.8K]4 years ago
7 0

Answer:

70

Step-by-step explanation:

65 and 45 make up 110, and triangles are composed up 180°. The missing angle thatll make it add up to 180 is 70

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