1.
Classify the triangle by its angles and its sides.
A.
right and scalene
B.
obtuse and equilateral
C.
right and isosceles
D.
acute and isosceles
Hint
2.
Find the value of
x
in
if
°
and
°, and
is a right angle.
A.
10
B.
15
C.
20
D.
5
Hint
3.
Choose the false statement.
A.
A right triangle has two acute angles.
B.
An obtuse triangle has two obtuse angles.
C.
A triangle can have three acute angles.
D.
An equilateral triangle has three acute angles.
Hint
4.
Find the value of
x
in
RST
if
m
R
= 3
x
°,
m
S
= 3
x
°, and
m
T
= 90°.
A.
x
= 15
B.
x
= 45
C.
x
= 10
D.
x
= 20
Hint
5.
A triangle with three congruent sides is called ____________.
A.
Scalene
B.
Equilateral
C.
Obtuse
D.
Right
Hint