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- Alcott Elementary School
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- Houston Academy for International Studies
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- J.P. Henderson Elementary
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- Medicaid Finance & Consulting Services
- Memorial Elementary
- Meyerland Performing and Visual Arts Middle School
- Mickey Leland College Preparatory Academy for Young Men
- Middle College at Felix Fraga
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- Milne Elementary School
- Mitchell Elementary School
- Momentum Academy
- Montgomery Elementary
- Moreno, Joe E. Elementary
- Navarro Middle School
- Neff Early Learning Center
- Neff Elementary School
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- Oates Elementary
- Ortiz Middle School
- Osborne (John G.) Elementary
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- Park Place Elementary School
- Parker Elementary
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- Port Houston Elementary School
- Project Chrysalis Middle School
- Pugh Elementary
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- Red Elementary
- Reynolds Elementary
- River Oaks Elementary IB World School
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- Ross (Betsy) Elementary School
- Rucker Elementary
- Sam Houston Math, Science and Technology Center
- Sanchez Elementary
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- Scarborough High School
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- Seguin Elementary
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- Sherman Elementary School
- Sinclair Elementary School
- Smith, K. Elementary
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- Spanish
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- Students
- Sugar Grove Academy Middle School
- Sutton Elementary
- T.H. Rogers School: A 7-star School of Distinction
- Tanglewood Middle School
- The High School for the Performing and Visual Arts
- The Rice School La Escuela Rice
- The School at St George Place
- Thomas Middle School
- Thompson Elementary
- Thurgood Marshall Elementary School
- Tijerina Elementary
- Tinsley Elementary
- Travis Elementary School
- Twain (Mark) Elementary
- Valley West Elementary
- Vietnamese
- Virgil I. Grissom Elementary School
- Wainwright Elementary
- Walnut Bend Elementary
- Waltrip High School
- Washington High School
- Welch Middle School
- Wesley (Mabel B.) Elementary School
- West Briar Middle School
- West University Elementary School
- Westbury High School
- Westside High School
- Wharton Dual Language Academy
- Wheatley High School
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- Whittier Elementary School
- Williams Middle School
- Wilson Montessori
- Windsor Village Vanguard Magnet Elementary
- Wisdom High School
- Woodson PK-8
- Young Elementary
- Young Scholars Academy for Excellence
- YWCPA

Third graders have a great time constructing geometric figures in Mr. Hernandez Class applying concepts of math and science.

**Lines**

A line is one of the basic terms in geometry. We may think of a line as a "straight" line that we might draw with a ruler on a piece of paper, except that in geometry, a line extends forever in both directions. We write the name of a line passing through two different points A and B as "line AB" or as (), the two-headed arrow over AB signifying a line passing through points A and B.

Example: The following is a diagram of two lines: line AB and line HG.

The arrows signify that the lines drawn extend indefinitely in each direction.

**Points**

A point is one of the basic terms in geometry. We may think of a point as a "dot" on a piece of paper. We identify this point with a number or letter. A point has no length or width, it just specifies an exact location.

Example: The following is a diagram of points A, B, C, and Q:

**Intersection**

The term intersect is used when lines, rays, line segments or figures meet, that is, they share a common point. The point they share is called the point of intersection. We say that these figures intersect.

Example: In the diagram below, line AB and line GH intersect at point D:

Example: In the diagram below, line 1 intersects the square in points M and N:

Example: In the diagram below, line 2 intersects the circle at point P:

Line Segments

A line segment is one of the basic terms in geometry. We may think of a line segment as a "straight" line that we might draw with a ruler on a piece of paper. A line segment does not extend forever, but has two distinct endpoints. We write the name of a line segment with endpoints A and B as "line segment AB" .

Note how there are no arrow heads on the line over AB such as when we denote a line or a ray.

Example: The following is a diagram of two line segments: line segment CD and line segment PN, or simply segment CD and segment PN.

**Rays**

A ray is one of the basic terms in geometry. We may think of a ray as a "straight" line that begins at a certain point and extends forever in one direction. The point where the ray begins is known as its endpoint. We write the name of a ray with endpoint A and passing through a point B as "ray AB" or as . Note how the arrow heads denotes the direction the ray extends in: there is no arrow head over the endpoint.

Example: The following is a diagram of two rays: ray HG and ray AB.

**Endpoints**

An endpoint is a point used to define a line segment or ray. A line segment has two endpoints; a ray has one.

Example: The endpoints of line segment DC below are points D and C, and the endpoint of ray MN is point M below:

Parallel Lines

Two lines in the same plane which never intersect are called parallel lines. We say that two line segments are parallel if the lines that they lie on are parallel. If line 1 is parallel to line 2, we write this as

line 1 || line 2

When two line segments DC and AB lie on parallel lines, we write this as

segment DC || segment AB.

Example: Lines 1 and 2 below are parallel.

Example: The opposite sides of the rectangle below are parallel. The lines passing through them never meet.

A line is one of the basic terms in geometry. We may think of a line as a "straight" line that we might draw with a ruler on a piece of paper, except that in geometry, a line extends forever in both directions. We write the name of a line passing through two different points A and B as "line AB" or as (), the two-headed arrow over AB signifying a line passing through points A and B.

Example: The following is a diagram of two lines: line AB and line HG.

The arrows signify that the lines drawn extend indefinitely in each direction.

A point is one of the basic terms in geometry. We may think of a point as a "dot" on a piece of paper. We identify this point with a number or letter. A point has no length or width, it just specifies an exact location.

Example: The following is a diagram of points A, B, C, and Q:

The term intersect is used when lines, rays, line segments or figures meet, that is, they share a common point. The point they share is called the point of intersection. We say that these figures intersect.

Example: In the diagram below, line AB and line GH intersect at point D:

Example: In the diagram below, line 1 intersects the square in points M and N:

Example: In the diagram below, line 2 intersects the circle at point P:

Line Segments

A line segment is one of the basic terms in geometry. We may think of a line segment as a "straight" line that we might draw with a ruler on a piece of paper. A line segment does not extend forever, but has two distinct endpoints. We write the name of a line segment with endpoints A and B as "line segment AB" .

Note how there are no arrow heads on the line over AB such as when we denote a line or a ray.

Example: The following is a diagram of two line segments: line segment CD and line segment PN, or simply segment CD and segment PN.

A ray is one of the basic terms in geometry. We may think of a ray as a "straight" line that begins at a certain point and extends forever in one direction. The point where the ray begins is known as its endpoint. We write the name of a ray with endpoint A and passing through a point B as "ray AB" or as . Note how the arrow heads denotes the direction the ray extends in: there is no arrow head over the endpoint.

Example: The following is a diagram of two rays: ray HG and ray AB.

An endpoint is a point used to define a line segment or ray. A line segment has two endpoints; a ray has one.

Example: The endpoints of line segment DC below are points D and C, and the endpoint of ray MN is point M below:

Parallel Lines

Two lines in the same plane which never intersect are called parallel lines. We say that two line segments are parallel if the lines that they lie on are parallel. If line 1 is parallel to line 2, we write this as

line 1 || line 2

When two line segments DC and AB lie on parallel lines, we write this as

segment DC || segment AB.

Example: Lines 1 and 2 below are parallel.

Example: The opposite sides of the rectangle below are parallel. The lines passing through them never meet.

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