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Collinear set of points: These are a set of points that all lie on the same straight line.
Noncollinear set of points: These are a set of three or more points that do not all lie on the same straight line.
Line Segment: Also known as a segment. This is a set of points consisting of two points on a line, called endpoints, and all of the points on the line between the endpoints.
Congruent Segments: Segments that have the same measure.
MIdpoint: A point that divides the two a line segment into two congruent segments.
Line Segment Bisector: Any line, or subset of a line, that intersects the segment at its midpoint.
Half Line: A set of points on one side of a point.
Ray: A part of a line that consists of a point on the line, called an endpoint, and all the points on one side of the endpoint.
Opposite Rays: Two rays of the same line with a common endpoint and no other point in common.
Angle: A set of points that is the union of two rays having the same endpoint.
Straight Angle: An angle that is the union of opposite rays and whose degree measure is 180.
Acute Angle: An angle whose degree measure is greater than 0 and less than 90.
Right Angle: An angle whose degree measure is 90.
Obtuse Angle: An angle whose degree measure is greater than 90 and less than 180.
Congruent Angle: These are angles that have the same measure.
Angle Bisector: A ray whose endpoint is the vertex of the angle, and that divides that angle into two congruent angles.
Perpendicular Lines: Two lines that intersect to form right angles.
Polygon: A closed figure in a plane that is the union of line segments such that the segments intersect only at their endpoints and no segments sharing a common endpoint are collinear.
Triangle: A polygon that has exactly three sides.
Scalene Triangle: A triangle that has no congruent sides.
Isosceles Triangle: A triangles that has two congruent sides.
Equilateral Triangle: A triangle that has three congruent sides.
Acute Angle: A triangle that has three acute angles.
Right Triangle: A triangle that has a right angle.
Obtuse Triangle: A triangle that has an obtuse angle.
Equilateral Triangle: A triangle that has three congruent angles.
Across:1. | Two lines that intersect to form right angles. | 5. | An angle whose degree measure is greater than 0 and less than 90. | 5. | A triangle that has three acute angles. | 8. | An angle that is the union of opposite rays and whose degree measure is 180. | 11. | A part of a line that consists of a point on the line, called an endpoint, and all the points on one side of the endpoint. | 12. | A set of points that is the union of two rays having the same endpoint. | 15. | A triangle that has no congruent sides. | 16. | Also known as a segment. This is a set of points consisting of two points on a line, called endpoints, and all of the points on the line between the endpoints. | 17. | These are angles that have the same measure. | 18. | Two rays of the same line with a common endpoint and no other point in common. |
| | Down:2. | These are a set of three or more points that do not all lie on the same straight line. | 3. | Segments that have the same measure. | 4. | A triangles that has two congruent sides. | 6. | A triangle that has three congruent sides. | 7. | These are a set of points that all lie on the same straight line. | 9. | A ray whose endpoint is the vertex of the angle, and that divides that angle into two congruent angles. | 10. | Any line, or subset of a line, that intersects the segment at its midpoint. | 11. | A triangle that has a right angle. | 13. | An angle whose degree measure is greater than 90 and less than 180. | 14. | A closed figure in a plane that is the union of line segments such that the segments intersect only at their endpoints and no segments sharing a common endpoint are collinear. |
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© 2014
PuzzleFast.com, Noncommercial Use Only
Across:1. | Two lines that intersect to form right angles. | 5. | An angle whose degree measure is greater than 0 and less than 90. | 5. | A triangle that has three acute angles. | 8. | An angle that is the union of opposite rays and whose degree measure is 180. | 11. | A part of a line that consists of a point on the line, called an endpoint, and all the points on one side of the endpoint. | 12. | A set of points that is the union of two rays having the same endpoint. | 15. | A triangle that has no congruent sides. | 16. | Also known as a segment. This is a set of points consisting of two points on a line, called endpoints, and all of the points on the line between the endpoints. | 17. | These are angles that have the same measure. | 18. | Two rays of the same line with a common endpoint and no other point in common. |
| | Down:2. | These are a set of three or more points that do not all lie on the same straight line. | 3. | Segments that have the same measure. | 4. | A triangles that has two congruent sides. | 6. | A triangle that has three congruent sides. | 7. | These are a set of points that all lie on the same straight line. | 9. | A ray whose endpoint is the vertex of the angle, and that divides that angle into two congruent angles. | 10. | Any line, or subset of a line, that intersects the segment at its midpoint. | 11. | A triangle that has a right angle. | 13. | An angle whose degree measure is greater than 90 and less than 180. | 14. | A closed figure in a plane that is the union of line segments such that the segments intersect only at their endpoints and no segments sharing a common endpoint are collinear. |
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© 2014
PuzzleFast.com, Noncommercial Use Only