Find the value of x using angle properties & the measure of

15.

16.

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= (if needed)

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17.

18.

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Step-by-step explanation:

15. The two following angles, which is and , are Corresponding Angles. Write an expression by using the following measurements from   and  . Then, solve the expression for the value of :

=

=

Solve for :

16. After you have the value use it to find the actual measurements of both and , by applying to the following expressions from both and and solve them:

-The value of :

-Solve for :

=

-The actual measurement of :

=

-Solve for :

-The actual measurement of : (if needed)

=

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17. The two following angles, which is and are Alternate Interior Angles .Write an expression by using the following measurements from and . Then, solve the expression for the value of :

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=

-Solve for :

18. After you have the value use it to find the actual measurement of  , by applying to the expression from and solve it and find the actual measurement of an angle that is not labeled, which is :

-The value of :

Solve for :

=

-The actual measurement of :

=

-Since both and are supplementary (two angles that equals to ), and you want to find the actual measurement of , Use the measurement of and subtract it from :

-The actual measurement of :

=

the forst and 3rd

step-by-step explanation:

78.59 is the mean

step-by-step explanation: