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suselygonza
11.10.2019 •
Mathematics
Use a definition, postulate, or theorem to find the value of x in the figure described. ∠abc and ∠cbd are a linear pair. if m∠abc = m∠cbd = (2x − 8)°, find x. select each definition, postulate, or theorem you will use.
a angle addition postulate
b linear pair theorem
c definition of a linear pair
d definition of an angle bisector the solution is x =
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Ответ:
Linear Pair Theorem
Step-by-step explanation:
Linear Pair Theorem says that if two angles forjm linear pair then they are supplementary.
Given : ∠ABC and ∠CBD are a linear pair.
Since linear pair is supplementary.
And supplementary angles area dded up to 180 degrees.
Then, ∠ABC +∠CBD = 180° (1)
Also, if m∠ABC = m∠CBD = (2x − 8)° [given] (2)
Then, from (1) and (2), we have
Divide both the sides by 4 , we get
Hence, the correct answer is Option (B) "Linear Pair Theorem"
Ответ:
d d d d d d d d d d d d d d d de d d