2.
Point <ul><li>A point is an undefined term in geometry, it names a location and has no size. </li></ul><ul><li>In baseball, a point can be represented by a player on the field. </li></ul>
3.
Line (Segment) <ul><li>A line segment is a part of a line consisting of two endpoints and all points between them. </li></ul><ul><li>A line segment on a baseball field would be from 1 st base to 2 nd base. </li></ul>
4.
Plane <ul><li>A plane is an undefined term in geometry, it is a flat surface that has no thickness and extends forever. </li></ul><ul><li>A baseball field would represent a plane. </li></ul>
5.
Angle <ul><li>An angle is a figure formed by two rays with a common endpoint. </li></ul><ul><li>An angle on the baseball field would be created from 1 st base, to 2 nd base, to 3 rd base. The name of this angle would be 2 nd base. </li></ul>
6.
Perpendicular Lines <ul><li>Perpendicular lines are lines that intersect at 90 ° angles. </li></ul><ul><li>An example of perpendicular lines on the Texas Rangers symbol would be at the upper left hand corner of the T. </li></ul>
7.
Parallel Lines <ul><li>Parallel lines are lines in the same plane that do not intersect. </li></ul><ul><li>An example of parallel lines on the baseball field would be the pinstripes on a uniform. </li></ul>
8.
Triangle <ul><li>A triangle is a three- sided polygon. </li></ul><ul><li>A triangle on the Los Angeles Dodgers symbol would be the upper half of the A. </li></ul>
9.
Right Triangle <ul><li>A right triangle is a triangle with one right angle. </li></ul><ul><li>An example of a right triangle on the baseball field would be a diagram of a batters hitting positions. (1 st base and 3 rd base show right triangles.) </li></ul>
10.
Pentagon <ul><li>A pentagon is a five-sided polygon. </li></ul><ul><li>A pentagon on the baseball field would be home plate. </li></ul>
11.
Hexagon <ul><li>A hexagon is a six-sided polygon. </li></ul><ul><li>A hexagon on the baseball field would be a pitching screen used during batting practice. </li></ul>
12.
Square <ul><li>A square is a quadrilateral with four congruent sides and four right angles. </li></ul><ul><li>A square in baseball would be 1 st base. </li></ul>
13.
Rectangle <ul><li>A rectangle is a quadrilateral with four right angles. </li></ul><ul><li>A rectangle in baseball would be a scoreboard. </li></ul>
14.
Trapezoid <ul><li>A trapezoid is a quadrilateral with exactly one pair of parallel sides. </li></ul><ul><li>A trapezoid in baseball can be found on a catchers mask. </li></ul>
15.
Parallelogram <ul><li>A parallelogram is a quadrilateral with two pairs of parallel sides. </li></ul><ul><li>A parallelogram can be found at a baseball field at the railing of the stairwells. </li></ul>
16.
Circle <ul><li>A circle is a set of points in a plane that are a fixed distance from a given point called the center of the circle. </li></ul><ul><li>A circle on the baseball field is the on deck circle. </li></ul>
17.
Cylinder <ul><li>A cylinder is a three-dimensional figure with two parallel congruent circular bases and a curved lateral surface that connects the bases. </li></ul><ul><li>A cylinder on the baseball field is the cooler of Gatorade in the dugout. </li></ul>
18.
Sphere <ul><li>A sphere is a set of points in space that are a fixed distance from a given point called the center of the sphere. </li></ul><ul><li>A sphere in baseball is the baseball. </li></ul>
19.
Five Pointed Star <ul><li>A five pointed star is a ten-sided polygon with five symmetrical projecting points. </li></ul><ul><li>In baseball a star would be found on the United States flag. </li></ul>
20.
Cube <ul><li>A cube is a solid bound by six equal sides. </li></ul><ul><li>A cube in baseball is a cube baseball holder. </li></ul>
21.
Octagon <ul><li>An octagon is an eight-sided polygon. </li></ul><ul><li>On the baseball field, you can find an octagon at the batters box. </li></ul>
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