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Across 1. Lines that form 90 degree angles, intersect to form adjacent angles. 3. Inner part of figure. 6. Measure 90 degrees. 7. Two angles that lie in the same plane, have common vertex & side but no common interior point. 10. Side across from right triangle; longest side. 11. Angle between two congruent legs of isosceles triangle. 12. Two angles whose sum is 180 degrees 15. Triangle with 1 obtuse angle and 2 acute angles. 20. Two nonadjacent angles formed by two intersecting lines. 23. Unit of measure for angles. 25. Two sides forming right angle in right triangle; or congruent side of opposite side of isosceles triangle. 26. All three sides have different lengths. (No congruent angles or sides) 28. Pair of angles in the exterior of figure formed by two lines & transversal lying on alternate sides of transversal & having different vertices. (V shape) 29. At least two sides are congruent. 30. An angle whose measure is greater than 0 but less than 90 degrees. 31. Pair of adjacent angles whose non-common sides are opposite rays.

Down 2. Triangle with 1 right triangle and 2 acute angles. 4. Two rays with common endpoint pointing in opposite directions, forms a straight angle. 5. Pair of angles in interior of figure that are on the same side of the transversal. 8. All three angles are acute. 9. Pair of angles in the interior of figure formed by two lines & transversal lying on alternate sides of transversal & having different vertices. (Z shape) 13. All three angles are congruent. 14. Two angles whose sum is 90 degrees. 16. All three sides are congruent. 17. Measures 180 degrees. 18. Line that intersect two coplanar lines in two distinct points. 19. Pair of angles in exterior of figure that are on the same side of the transversal. 21. Figure formed by two lines & transversal, pair of angles on same side of transversal, 1 in interior and 1 in exterior having different vertices. (F shape) 22. Coplanar lines that never intersect. 24. An angle whose measure is greater than 90 but less than 180 degrees. 27. Outer part of a figure.