8.60 Chapter 8
5. In the figure, a snail moves from A to E via B, C and D in order. Find
the total length of the snail's path.
6. The figure shows a rectangular coordinate plane, where FG is a
horizontal line and HG is a vertical line.
(a) Find the coordinates of G.
(b) Given that FH = 41 units, find the perimeter of 3FGH.
7. In the figure, OPQR is a rectangle and PO = 2
1 RO.
(a) Find the length of RO.
(b) What are the coordinates of Q and R?
8. The figure shows a rectangle ABCD, whose sides are either horizontal
or vertical. The perimeter of ABCD is 90 units. Find
(a) the lengths of line segments BA and AD,
(b) the coordinates of C and D.
9. Find the area of parallelogram FGHJ in the figure.
y
x
O
E(4,- 6)
D(4,4)
C(- 6,4)
B(- 6,- 2) A(- 2,- 2)
y
x
O H(30,- 1)
F(- 10,- 10) G
y
x
Q P(0,4)
R
O
A(9,12)
B(-6,12)
C D
y
x
O
y
x
O
F(0.2,0.6)
J(0.4,0.6)
H(-0.2,-0.2)
G(-0.4,-0.2)
2
2
2
2
3
30 units
(30 , -10)
8 units
BA = 15 units, AD = 30 units
90 units
Q(-8 , 4), R(-8 , 0)
C(-6 , -18), D(9 , -18)
0.16 sq. units