31
HOT SEAT CHALLENGE
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
NThe base angles of
an isosceles triangle are
obtuse.
3
NA right triangle
can be equilateral.
4
NAn obtuse scalene
triangle is congruent to an acute scalene
triangle.
5
SThe 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
SThe 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.
A16The 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.
A21A 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 ||.
S25There are three lines:
l, m, and n.l || m, m || n, and l || n
l, m, and n are coplanar.
S26If 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.
