Geometry In Plants
Nia Trusler
3A
Point
Definition- An exact
location in space.
T
The strawberry seed
represents a “point”,
because it is an exact
location on the strawberry.
Line
A
B
Definition- A straight path
that is endless in both
directions.
The tulips represent a line
because their stems are
endless in both directions
Line Segment
C
D
Definition- A part of a line
connecting two points.
The plant represents a
line segment, because its
spots are points that are
connected with a line.
Ray
E
F
Definition- A portion of a
line which starts at a certain
point and goes off in a
particular direction into
infinity.
The sunflower represents a
ray because it starts at a
certain point (the ground),
and the stem would go into
infinity if it could.
Opposite Rays
Definition- Two rays with
a common endpoint that
form a straight line.
H
G
I
The fern represents
opposite rays, because
the leaves are two “rays”
and they have a common
endpoint (the stem) and
they for a straight line.
Parallel Lines
J
K
Definition- Two lines on a
plane that never meet, and
they are the same distance
apart.
The palm trees represent
parallel lines, because they
are two lines that will never
meet.
Acute Angle
Definition- An angle that is
less than 90°.
N
O
P
This flower represents an
acute angle because the
two petals make an angle
less than 90°.
Obtuse Angle
Definition- An angle that is
greater than 90°, but less
than 180°.
Q
R
S
The petals on the flower
shown have an angle that
are more than 90° and
less than 180°.
Right Angle
T
V
Definition- An angle that is
exactly 90°.
U
The tree branch represents a
right angle because the
branches are at a angle of
90°.
Vertical Angles
Definition- Angles
opposite from each other
when two lines cross.
1
2
This flower represents
vertical angles because
the creases in the flower
are angles that are
opposite from each
other.
Adjacent Angles
Definition- Angles that
have a common side and a
common vertex.
3
4
The tomato represents
adjacent angles because
some of the stem leaves
have a common side and
vertex.
Intersecting Lines
Definition- Lines that
meet or cross one
another.
A
W
This flower represents
intersecting lines,
because the petals “A”
and “B” cross one
another.
Intersecting Planes
Definition- Two planes
that meet in a single line.
X
C
D
Y
These two flowers
represent intersecting
planes because each
flower is a plane and
they intersect.
Complementary Angles
Definition-Two angles
that add up to 90°.
5
6
This flower represents
complementary angles,
because the angles (the
petals) add up to 90°.
Midpoint of Line Segment
M
Definition- The midpoint
is halfway between two
points on a line
segment.
This plant represents
midpoint, because all
three points are a
segment and the point
in the middle is the
midpoint.
Linear Pair
S
T
Definition- Two angles
that are supplementary
and adjacent. (add up to
180°)
This flower represents
linear pair, because the
petals are supplementary,
adjacent, and add up to
180°.