Geo I
HW 3 – 16
Name ________________
Date ___________
1. You graph a quadrilateral on the coordinate plane, then you find the
slopes of all 4 sides. What is the quadrilateral if:
a) both pairs of opposite sides are parallel?
b) only 1 pair of opposite sides are parallel?
c) no sides are parallel?
2. Assume the slopes you found in # 1 were: ½, -2, ½, and -2. What is the
quadrilateral?
What else do you need to check for? How?
3. Given ΔABC, graphed on the coordinate plane, for which of the
following transformations will ΔA’B’C’ be congruent to ΔABC?
a) reflection across the x-axis
b) 180° rotation
c) translation of 3 left and 2 up
d) 270° rotation
d) reflection over the y-axis
e) 90° rotation
4. ΔDEF is reflected over the x-axis.
Give the image points; you may
graph, but you do not have to.
D(2, 5)
D’ (
E(-1, 3)
E’ (
F(-5, -2)
F’ (
5. Complete the proof
G
J
A
M
W
Given:
JA = GM
JA // GM
JM // GW
Prove:
M is the midpt of AW