To prove a similarity of a triangle, we use angles or sides.
In this case we use angles to prove
∠ACB = ∠AED (Corresponding ∠s)
∠AED = ∠FDE (Alternate ∠s)
∠ABC = ∠ADE (Corresponding ∠s)
∠ADE = ∠FED (Alternate ∠s)
∠BAC = ∠EFD (sum of ∠s in a triangle)
Now we know the similarity in the triangles.
But it is necessary to write the similar triangle according to how the question ask.
The question asks " ∆ABC is similar to ∆____. " So we find ∠ABC in the prove.
∠ABC corressponds to ∠FED as stated above.
∴ ∆ABC is similar to ∆FED
Similarly, if the question asks " ∆ACB is similar to ∆____. "
We answer as ∆ACB is similar to ∆FDE.
Answer is ∆ABC is similar to ∆FED.
Answer:
1. $10.56
Step-by-step explanation:
950.40÷90=10.56
1 and 3 I believe sorry if it’s incorrect
We can compare by converting Johnny's reading time into the same unit of Jacky's, hours.
There are 60 minutes in an hour, so use this:
![\frac{1}{3} * \frac{60}{1} = 20](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B3%7D%20%2A%20%20%5Cfrac%7B60%7D%7B1%7D%20%3D%2020)
15 < 20, so Johnny read faster. This is 5 pages faster per hour than Jacky.
The answer is actually 164.1 because I learned how to multiply this. :)