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Java Games: Flashcards, matching, concentration, and word search. |
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Math lines, angles, polygons
Topic 10 in older Envision Math, Topic 11 in new version.
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line,  | A set of points that forms an endless straight path in opposite directions. |
line segment,  | A part of a line with two endpoints. |
parallel lines,  | Lines that never cross. |
intersecting lines,  | lines that cross at one point. |
angle,  | Two rays with the same endpoint. |
| ray | A part of a line with only one endpoint. |
| perpendicular lines, | Two lines, line segments, or rays that make a right angle. |
right angle,  | An angle that makes a square corner. |
obtuse angle,  | An angle that is open more than a right angle. |
acute angle,  | an angle that is open less than a right angle. |
| side, | a line segment that forms part of a polygon. |
polygon,  | a closed figure made up of line segments. |
| vertex of a polygon | The point where two sides of a polygon meet. |
| triangle | A polygon with 3 sides. |
quadrilateral,  | A polygon with 4 sides. |
pentagon,  | A polygon with 5 sides. |
hexagon,  | A polygon with 6 sides. |
| octagon | A polygon with 8 sides. |
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