Geometry Angles and Triangles

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Across
  1. 3. Triangle with two congruent sides.
  2. 4. When two lines cross so that the angle of their intersection is 90 degrees.
  3. 6. The measure of an exterior angle of a triangle is equal to the sum of two remote interior angles.
  4. 9. Two lines that never cross because they go in the same direction.
  5. 12. An angle that measures 90 degrees.
  6. 14. When two or more angles add up to 180 degrees.
  7. 15. Triangle where no sides are congruent.
  8. 16. Angles that are opposite one another at the vertex when two straight lines intersecting.
  9. 17. Angles which occupy the same relative position at each intersection where a straight line crosses two others. If the two lines are parallel, the corresponding angles are equal.
  10. 18. Angles formed when a transversal intersects two parallel lines. They lie outside the two parallel lines but on either side of the transversal.
  11. 20. A line that passes through two lines in the same plane at two distinct points.
  12. 21. This statement says that a triangle has three angles that add up to 180 degrees.
Down
  1. 1. Angles formed when a transversal intersects two parallel lines. They lie on the inner side of the parallel lines but on the opposite sides of the transversal.
  2. 2. When two or more angles add up to 90 degrees.
  3. 5. An angle that measures more than 90 degrees.
  4. 7. Triangle where all sides are congruent.
  5. 8. A quadrilateral that has congruent opposite sides and congruent opposite angles. The pair of sides that make the shape are parallel.
  6. 10. When two or more lines, figures, and angles are exactly the same in measurement.
  7. 11. Line that splits another line segment exactly in two and creates a 90 degree angle at the intersection.
  8. 13. An angle that measures between 0 and 90 degrees.
  9. 19. An angle that measures exactly 180 degrees.
  10. 22. Middle point on a line that splits it exactly in two.