The table shows the proof of the relationship between the slopes of two perpendicular lines. What is the missing statement in step 2?
1. is similar to . given 2. property of similar triangles 3. = property of proportion 4. slope of = slope of = definition of slope 5. slope of × slope of = multiplying the slopes 6. (This statement is intentionally left blank.) Substitution Property of Equality 7. slope of × slope of = -1 simplifying the right side
couldnt get all of it but tried my best
a screenshot is best because we can see the full problem (even the missing symbols)
1. AC←→⊥CD←→ (view diagram) ΔABC is similar to ΔCED. given 2. (This statement is intentionally left blank.) property of similar triangles 3. ABBC = ECDE property of proportion 4. slope of AC←→ = -ABBC slope of DC←→ = DEAC definition of slope 5. slope of AC←→ × slope of DC←→ = -ABBC×DEEC multiplying the slopes 6. Substitution Property of Equality 7. slope of AC←→ × slope of DC←→ = -1 simplifying the right side
sorry here it is
well step 3 has AB*BC = EC*DE, or so it seems the step before that would be some proportion and cross multiplying would lead to step 3
does that make sense?
not really but u can explain it in detail. mabye ill get it
let's say you had a/b = c/d
if you cross multiplied, you'd get a*d = b*c agreed?
yea
so what proportion could be set up to lead to AB*BC = EC*DE ?
they seem to look like this but in fraction AB/BC;. something like that.
AB/DE, and EC/DE
more like AB/EC = DE/BC. There are other possibilities |dw:1436929680423:dw|
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