3. Look at the picture.
We have the right angle triangle. We know the sum of measures of angles in triangle is equal 180°. Therefore:


4.
Look at the picture.
Use Pythagorean theorem:



5.
TRUE: 1; 2; 4
6.
We find a slope of the line OP:

We have:

Now, we must find the slope of the line perpendicular to the line OP.
We know:

therefore

So. We have the answer! :)
Answer:
Step-by-step explanation:
a.4
KL is congruent to MN
b.2
AB is the length of segment AB
c.3
MN=7
d.1
KL is conguent to AB