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Supplementary Angles Worksheet - Find the value of x in each supplementary angle pair.

Worksheet with six problems showing supplementary angles, each with a given angle and a variable x to solve for the supplementary angle.

Worksheet with six problems showing supplementary angles, each with a given angle and a variable x to solve for the supplementary angle.

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Show Answer Key & Explanations Step-by-step solution for: Complementary and Supplementary Angles Worksheet
To find the value of $x$ for each pair of supplementary angles, we use the rule that supplementary angles add up to $180^\circ$.

Here is the step-by-step solution for each problem:

1) The angles are $x$ and $65^\circ$.
$$x + 65 = 180$$
$$x = 180 - 65$$
$$x = 115$$

2) The angles are $x$ and $90^\circ$.
$$x + 90 = 180$$
$$x = 180 - 90$$
$$x = 90$$

3) The angles are $114^\circ$ and $x$.
$$114 + x = 180$$
$$x = 180 - 114$$
$$x = 66$$

4) The angles are $108^\circ$ and $x$.
$$108 + x = 180$$
$$x = 180 - 108$$
$$x = 72$$

5) The angles are $x$ and $25^\circ$.
$$x + 25 = 180$$
$$x = 180 - 25$$
$$x = 155$$

6) The angles are $x$ and $143^\circ$.
$$x + 143 = 180$$
$$x = 180 - 143$$
$$x = 37$$

7) The angles are $x$ and $160^\circ$.
$$x + 160 = 180$$
$$x = 180 - 160$$
$$x = 20$$

8) The angles are $x$ and $114^\circ$.
$$x + 114 = 180$$
$$x = 180 - 114$$
$$x = 66$$

Final Answer:
1) $x = 115$
2) $x = 90$
3) $x = 66$
4) $x = 72$
5) $x = 155$
6) $x = 37$
7) $x = 20$
8) $x = 66$
Parent Tip: Review the logic above to help your child master the concept of supplementary angle worksheets.
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