GEO: 4-7 QC (coordinate proofs)
1.  In a coordinate proof, what could be used below 
     to prove that segments are congruent?
     (Select ALL that apply.)
same slopes
distance formula
Pythagorean Theorem
opposite, reciprocal slopes
2.  In a coordinate proof, what could be used below      to prove that lines are parallel?
same slopes
distance formula
Pythagorean Theorem
opposite, reciprocal slopes
3.  In a coordinate proof, what could be used below      to prove that segments form a 90 degree angle?
same slopes
distance formula
opposite, reciprocal slopes
4. Which position of a
    figure would be best
    to prove all 4 sides
    congruent?
C
A
B
D
5.  What would you need to show so that you could     prove a figure is a square? (Check ALL that apply.)
one set of opposite parallel sides
all four 90 degree angles
the area is 24 square units
all four sides congruent
6. Which position of a    figure would be best    to find midpoints?
C
D
A
B
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
*Be sure answer is
  reduced.  Put the 
  negative sign in the
  numerator if 
  needed.
7.  What is the slope     of side c?
a
d
b
c
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
*Be sure answer is
  reduced.  Put the 
  negative sign in the
  numerator if 
  needed.
8.  What is the slope     of side b?
a
d
b
c
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