Answer:
No, he should have set the sum of ∠AED and ∠DEC equal to 180°, rather then setting ∠AED and ∠DEC equal to each other.
Step-by-step explanation:
He was using the measurements of m∠AED & m∠CED, which are supplementary angles, not vertical angles (therefore making them, when combined, equal to 180°).
If they were vertical angles (at the case of m∠AED & m∠BEC, or the other pair), then yes, they will be congruent. But in this case, they are not, so you don't solve it like they are vertical angles.
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170 should be added because 9x7 is 63 and you would subtract 63 from 233
Answer:
w=1.5
Hopefully that helps
Step-by-step explanation:
Product-the answer found by multiplying to factors
3 X 3=9
