19stallwoodbrackens 19stallwoodbrackens
  • 12-05-2022
  • Mathematics
contestada

Please help!!!!!!!! Thank you sooo much!

Please help Thank you sooo much class=

Respuesta :

jimrgrant1 jimrgrant1
  • 12-05-2022

Answer:

see explanation

Step-by-step explanation:

(a)

∠ XBC = 55° because it corresponds to ∠ AXY

(b)

since XB = XC then Δ XBC is isosceles with base angles congruent, that is

∠ XBC = ∠ XCB = 55°

the sum of the 3 angles in Δ XBC = 180° , then

∠ BXC + 55° + 55° = 180°

∠ XBC + 110° =180° ( subtract 110° from both sides )

∠ XBC = 70°

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