tarajijiiji
tarajijiiji tarajijiiji
  • 12-05-2021
  • Mathematics
contestada

What is m∠BAC.

............

What is mBAC class=

Respuesta :

CaptainBryan
CaptainBryan CaptainBryan
  • 12-05-2021

Answer:

37 degrees

Step-by-step explanation:

1. m∠CBA = 71+45 = 116 degrees

2. m∠CBA = m∠CDA because of the quadrilateral property of opposite sides.

3. m∠CBA + m∠CDA = 2*116 = 232.

4. Total angle measure of a quadrilateral is 360 degrees, so m∠BAD + m∠BCD = 360-232 = 128 degrees.

5. m∠BAD = m∠BCD = 128/2 = 64 degrees

6. m∠BAC = m∠BAD - m∠CAD = 64 - 27 = 37 degrees

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