Questions 7 & 9 For each label the “Extra Congruency Information.” Options- none, reflexive property, or vertical angles. Also label the “Postulate.” Options- SSS, SAS, ASA, AAS, HL, not congruent. (if you need help understanding please comment)

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°

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step-by-step explanation:

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