Answer:
10
Step-by-step explanation:

4 x 5 = 20
= 10
We have to find the transformation that maps preimage ABCD to A" B" C"D" .
First there is a reflection across x axis to get A'B'C'D'.
And then there is a translation of 6 units to the left and 1 unit up .
And after doing so, we will get A"B"C"D".
So out of the four options, correct option is the first option.
Answer:
36cm
Step-by-step explanation:
The scale is 3 to 1, so the poster size is 3 times larger than the actual thing.
Answer:
AB and DE are congruent.
Step-by-step explanation:
Using alternate interior angles, they are congruent.
This is a simple

Pythagorean Theorem problem.
So here we go:
Imagine a right triangle with 2 legs and a hypotenuse.
The Pole is the vertical leg. The Cable is the hypotenuse. The distance on the ground between the cable and the pole is the 3rd leg.
We are trying to find the hypotenuse which is C in our Pythagorean Theorem.
Thus:

Add the squares:

Now take the square root of both sides:
*Remember that in triangles, we cannot have a negative value for the length. (If it's possible, please contact the Nobel Prize admins).

Thus: