|
3a.
|
a = 40°
|
(alternate angles on parallel lines are equal) |
| |
b = 66°
|
(alternate angles on parallel lines are equal) |
| |
x = 8 cm
|
(opposite sides of a parallelogram are equal length) |
|
3b.
|
c = 3.2 cm
|
(opposite sides of a rectangle are equal length) |
| |
d = 19°
|
(angle sum of triangle is 180°) |
| |
e = 71°
|
(alternate angles on parallel lines are equal) |
|
3c.
|
c = 11 cm
|
(opposite sides of a rhombus are equal length) |
| |
f = 31°
|
(opposite angles in a rhombus are equal) |
| |
h = i = 74.5°
|
(base angles of isosceles triangle are equal) |
| |
g = 74.5°
|
(alternate angles on parallel lines are equal) |
|
3d.
|
p = 11 cm
|
(adjacent sides of kite are equal length) |
| |
m = 90°
|
(intersecting diagonals of a kite) |
| |
n = 31°
|
(symmetry properties of a kite) |
| |
o = 59°
|
(angle sum of triangle is 180°) |
|
3e.
|
q = 75°
|
(co-interior angles on parallel lines) |
| |
r = 29°
|
(alternate angles on parallel lines are equal) |
|
3f.
|
v = 3.9 m
|
(symmetry properties of an arrowhead) |
| |
x = 90°
|
(intersecting diagonals of an arrowhead) |
| |
z = 76°
|
(symmetry properties of an arrowhead) |
| |
w = 61°
|
(angle sum of triangle is 180°) |
| |
y = 14°
|
(angle sum of triangle is 180°) |
