The Distance Formula
Distance Formula: Given the two points (x1, y1) and (x2, y2), the distance between these points is given
by the formula:
Don't let the subscripts scare you. They only indicate that there is a "first" point and a "second" point; that
is, that you have two points. Whichever one you call "first" or "second" is up to you. The distance will be
the same, regardless. (http://www.purplemath.com/modules/distform.htm)
See if you can use this formula to find the distance between the given points on the coordinate plane.
A
1. Distance between A and B
A(
,
) and B(
,
)
2. Distance between C and E
C(
,
) and E(
,
)
3. Distance between D and H
D(
,
) and H(
,
)
B
E
H
D
C
4. Distance between A and C
A(
,
) and C(
,
)
5. Distance between D and B
D(
,
) and B(
,
)