HOT SEAT CHALLENGE SCORING • First team finished with correct answer • 3 Points • Second team finished with correct answer • 2 Points • Correct answer • 1 Point • Incorrect answer • -2 Points • Talking • -3 Points DETERMINE IF THE FOLLOWING STATEMENTS ARE ALWAYS/SOMETIMES/NEVER S 1 A right triangle is isosceles. S 2 If AB is the perpendicular bisector of CD, then CD is the perpendicular bisector of AB. N 3 The base angles of an isosceles triangle are obtuse. N 4 A right triangle can be equilateral. N 5 An obtuse scalene triangle is congruent to an acute scalene triangle. S 6 The base of an isosceles triangle is shorter than either leg. A 7 If three sides of one triangle are congruent to three sides of another triangle, the triangles are congruent. S 8 The perpendicular bisector of a triangle passes through the opposite vertex. A 9 If a median of a triangle is also an altitude, then it is also an angle bisector. 10 N An obtuse triangle has three obtuse angles. 11 S Two equiangular triangles are congruent. 12 S The diagonals of a parallelogram are perpendicular. 13 A A square is a rectangle. 14 N A parallelogram is a trapezoid. 15 A Opposite angles of a parallelogram are congruent. 16 A The diagonals of a rhombus are perpendicular bisectors of each other. 17 N The diagonals of a trapezoid bisect each other. 18 A The diagonals of a square are congruent. 19 A Consecutive angles in a parallelogram are supplementary. 20 S A rectangle is a kite. 21 A A quadrilateral with two disjoint pairs of consecutive sides congruent is a kite. 22 S A quadrilateral with congruent diagonals is a rectangle. 23 A A parallelogram with adjacent sides congruent is a rhombus. 24 S m || n One plane contains m while another plane contains n. The two planes are ||. 25 S There are three lines: l, m, and n. l || m, m || n, and l || n l, m, and n are coplanar. 26 S If a line is perpendicular to one of two skew lines then it is perpendicular to the other. 27 S AX BX BX is in plane m AB plane m 28 S Lines parallel to the same plane are parallel.