HOTSEAT

CHALLENGE

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

DETERMINE IF THE FOLLOWING

STATEMENTS ARE

ALWAYS/SOMETIMES/NEVER

S

A right triangle is isosceles.

1

SIf AB is the

perpendicular bisector of CD, then CD is the

perpendicular bisector of AB.

2

N

The base angles of an isosceles triangle are

obtuse.

3

N

A right triangle can be

equilateral.

4

N

An obtuse scalene triangle is congruent to an acute scalene

triangle.

5

S

The base of an isosceles triangle

is shorter than either leg.

6

AIf three sides of one

triangle are congruent to three sides of another triangle, the triangles

are congruent.

7

S

The perpendicular bisector of a triangle passes through the

opposite vertex.

8

AIf a median of a

triangle is also an altitude, then it is

also an angle bisector.

9

N

An obtuse triangle has three

obtuse angles.

10

S

Two equiangular triangles are congruent.

11

S12

The diagonals of a parallelogram are

perpendicular.

A13

A square is a rectangle.

N14

A parallelogram is a trapezoid.

A15

Opposite angles of a parallelogram

are congruent.

A16

The diagonals of a rhombus are

perpendicular bisectors of each other.

N17

The diagonals of a trapezoid bisect each

other.

A18

The diagonals of a square are congruent.

A19

Consecutive angles in a parallelogram are supplementary.

S20

A rectangle is a kite.

A21

A quadrilateral with two disjoint pairs of

consecutive sides congruent is a kite.

S22

A quadrilateral with congruent diagonals is a

rectangle.

A23

A parallelogram with adjacent sides congruent

is a rhombus.

S24m || n

One plane contains m while another plane

contains n. The two planes are ||.

S25

There are three lines:l, m, and n.

l || m, m || n, and l || nl, m, and n are coplanar.

S26

If a line is perpendicular to one of two skew lines then

it is perpendicular to the other.

S27

AX BX BX is in plane m AB plane m

S28

Lines parallel to the same plane are parallel.