# Ch 5-8:Triangles,Parallel Lines, Properties of Quadrilaterals

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Ch 5-8:Triangles,Parallel Lines, Properties of Quadrilaterals
25
Altitude:A perpendicular segment from the vertex to the line containing the opposite side
Centroid:The point of intersection of the three mediums of a triangle
Incenter:The point of intersection of the angle bisectors of a triangle
Hypotenuse:Side opposite the right angle of a right triangle
Median:The _____ Of any trapezoid is parallel to the bases and has a length equal to half the sum of the base lengths
Penguin:Mr. Riley's favorite animal in the wild
Circumcenter:The point of intersection of a triangle
Auxiliary:When you add an ________ line or segment to a diagram to help you prove a theorem, You must be sure there is such a figure.
Converse:When you interchange the hypothesis and conclusion of a conditional statement
Concurrent:If three or more lines intersect in one point than the lines are
Congruent:The opposite sides of a parallelogram are
Exterior angle:An _____ of a polygon is formed by one side of the polygon and the extension of the adjacent side.
Corresponding angles:Consist of one interior and one exterior angle,Have different vertices
Corollary:A statement that follows directly from a theorem is sometimes called a ________
Remote interior angles:Each exterior angle of a triangle has one adjacent interior angle and _________
Included:An angle of a triangle is _________ by the two sides of the triangle that determin the angle
Supplementary:The consecutive angles of a parallelogram are
Median of a trapezoid:The segment that joins the midpoint of the legs in a trapezoid
Alternate interior angles:Are interior angles, Are on opposite sides of the transversal, Have different vertices
Orthocenter:The lines containing the three altitudes of a triangle will always meet in one point
Median:Is a segment from the vertex to the midpoint of the opposite side, Every triangle has three
Legs of a right triangle:Sides that determine the right angle
Transversal:A __________ is a line that intersects two or more lines, Each at a different point
Base angles:A pair of consecutive angles whose included side is a base, Each trapezoid has two _____
Isosceles trapezoid:Is one whose legs are congruent

# Ch 5-8:Triangles,Parallel Lines, Properties of Quadrilaterals

Across:1. | Are interior angles, Are on opposite sides of the transversal, Have different vertices | 4. | Consist of one interior and one exterior angle,Have different vertices | 11. | When you add an ________ line or segment to a diagram to help you prove a theorem, You must be sure there is such a figure. | 12. | Mr. Riley's favorite animal in the wild | 13. | A statement that follows directly from a theorem is sometimes called a ________ | 18. | Is a segment from the vertex to the midpoint of the opposite side, Every triangle has three | 21. | Is one whose legs are congruent | 22. | A __________ is a line that intersects two or more lines, Each at a different point | 23. | The _____ Of any trapezoid is parallel to the bases and has a length equal to half the sum of the base lengths | 24. | A pair of consecutive angles whose included side is a base, Each trapezoid has two _____ |
| | Down:2. | The consecutive angles of a parallelogram are | 3. | The segment that joins the midpoint of the legs in a trapezoid | 4. | If three or more lines intersect in one point than the lines are | 5. | Sides that determine the right angle | 6. | An _____ of a polygon is formed by one side of the polygon and the extension of the adjacent side. | 7. | The point of intersection of a triangle | 8. | Side opposite the right angle of a right triangle | 9. | An angle of a triangle is _________ by the two sides of the triangle that determin the angle | 10. | Each exterior angle of a triangle has one adjacent interior angle and _________ | 14. | A perpendicular segment from the vertex to the line containing the opposite side | 15. | The opposite sides of a parallelogram are | 16. | The point of intersection of the angle bisectors of a triangle | 17. | The lines containing the three altitudes of a triangle will always meet in one point | 19. | When you interchange the hypothesis and conclusion of a conditional statement | 20. | The point of intersection of the three mediums of a triangle |
| |

© 2012

PuzzleFast.com, Noncommercial Use Only

# Ch 5-8:Triangles,Parallel Lines, Properties of Quadrilaterals

Across:1. | Are interior angles, Are on opposite sides of the transversal, Have different vertices | 4. | Consist of one interior and one exterior angle,Have different vertices | 11. | When you add an ________ line or segment to a diagram to help you prove a theorem, You must be sure there is such a figure. | 12. | Mr. Riley's favorite animal in the wild | 13. | A statement that follows directly from a theorem is sometimes called a ________ | 18. | Is a segment from the vertex to the midpoint of the opposite side, Every triangle has three | 21. | Is one whose legs are congruent | 22. | A __________ is a line that intersects two or more lines, Each at a different point | 23. | The _____ Of any trapezoid is parallel to the bases and has a length equal to half the sum of the base lengths | 24. | A pair of consecutive angles whose included side is a base, Each trapezoid has two _____ |
| | Down:2. | The consecutive angles of a parallelogram are | 3. | The segment that joins the midpoint of the legs in a trapezoid | 4. | If three or more lines intersect in one point than the lines are | 5. | Sides that determine the right angle | 6. | An _____ of a polygon is formed by one side of the polygon and the extension of the adjacent side. | 7. | The point of intersection of a triangle | 8. | Side opposite the right angle of a right triangle | 9. | An angle of a triangle is _________ by the two sides of the triangle that determin the angle | 10. | Each exterior angle of a triangle has one adjacent interior angle and _________ | 14. | A perpendicular segment from the vertex to the line containing the opposite side | 15. | The opposite sides of a parallelogram are | 16. | The point of intersection of the angle bisectors of a triangle | 17. | The lines containing the three altitudes of a triangle will always meet in one point | 19. | When you interchange the hypothesis and conclusion of a conditional statement | 20. | The point of intersection of the three mediums of a triangle |
| |

© 2012

PuzzleFast.com, Noncommercial Use Only