Answers:
10. b.
9. b.
8. a.
7. a.
Step-by-step explanations:
10. Both segments are considered congruent, so turn both expressions into an equation:
Plug this back into the equation to get on both sides.
9. All edges in a square obtain congruent right angles and edges, so set equivalent to the given expression:
8. Both angles are considered supplementary, so turn both expressions into an equation and set it to one hundred eighty degrees:
7. In this rectangle, segment <em>EO</em><em> </em>is a segment bisectour, making these angles <em>Complementary</em><em> </em><em>Angles</em><em>.</em><em> </em>Therefore, set an equation up to find its complement:
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