SirKnight
SirKnight SirKnight
  • 23-06-2020
  • Mathematics
contestada

in each diagram the line BD bisects angle ABC. Find the measure of angle ABC​

in each diagram the line BD bisects angle ABC Find the measure of angle ABC class=

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jimrgrant1 jimrgrant1
  • 23-06-2020

Answer:

∠ ABC = 134°

Step-by-step explanation:

Given tat CD bisects ∠ ABC then

∠ DBC = ∠ ABD , substitute values

x - 33 = [tex]\frac{x}{2}[/tex] + 17 ( multiply through by 2 to clear the fraction )

2x - 66 = x + 34 ( subtract x from both sides )

x - 66 = 34 ( add 66 to both sides )

x = 100

Thus

∠ DBC = ∠ ABD = x - 33 = 100 - 33 = 67°

Hence

∠ ABC = ∠ DBC + ∠ ABD = 67° + 67° = 134°

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