1. HOT SEAT CHALLENGE

2. SCORING First team finished with correct answer Second team finished with correct answer Correct answer Incorrect answer Talking 3 Points 2 Points 1 Point -2 Points -3 Points

3. DETERMINE IF THE FOLLOWING STATEMENTS ARE ALWAYS/SOMETIMES/NEVER

4. S A right triangle is isosceles. 1

5. S If AB is the perpendicular bisector of CD, then CD is the perpendicular bisector of AB. 2

6. N The base angles of an isosceles triangle are obtuse. 3

7. N A right triangle can be equilateral. 4

8. N An obtuse scalene triangle is congruent to an acute scalene triangle. 5

9. S The base of an isosceles triangle is shorter than either leg. 6

10. A If three sides of one triangle are congruent to three sides of another triangle, the triangles are congruent. 7

11. S The perpendicular bisector of a triangle passes through the opposite vertex. 8

12. A If a median of a triangle is also an altitude, then it is also an angle bisector. 9

13. N An obtuse triangle has three obtuse angles. 10

14. S Two equiangular triangles are congruent. 11

15. S12 The diagonals of a parallelogram are perpendicular.

16. A13 A square is a rectangle.

17. N14 A parallelogram is a trapezoid.

18. A15 Opposite angles of a parallelogram are congruent.

19. A16 The diagonals of a rhombus are perpendicular bisectors of each other.

20. N17 The diagonals of a trapezoid bisect each other.

21. A18 The diagonals of a square are congruent.

22. A19 Consecutive angles in a parallelogram are supplementary.

23. S20 A rectangle is a kite.

24. A21 A quadrilateral with two disjoint pairs of consecutive sides congruent is a kite.

25. S22 A quadrilateral with congruent diagonals is a rectangle.

26. A23 A parallelogram with adjacent sides congruent is a rhombus.

27. S24 m || n One plane contains m while another plane contains n. The two planes are ||.

28. S25 There are three lines: l, m, and n. l || m, m || n, and l || n l, m, and n are coplanar.

29. S26 If a line is perpendicular to one of two skew lines then it is perpendicular to the other.

30. S27 AX  BX BX is in plane m AB  plane m

31. S28 Lines parallel to the same plane are parallel.