1.
Classify the triangle by its angles and its sides.
A.
obtuse and equilateral
B.
right and isosceles
C.
acute and isosceles
D.
right and scalene
Hint
2.
Find the value of
x
in
if
°
and
°, and
is a right angle.
A.
20
B.
5
C.
10
D.
15
Hint
3.
Choose the false statement.
A.
A right triangle has two acute angles.
B.
An equilateral triangle has three acute angles.
C.
An obtuse triangle has two obtuse angles.
D.
A triangle can have 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
= 20
B.
x
= 15
C.
x
= 45
D.
x
= 10
Hint
5.
Classify the triangle by its angles and by its sides.
A.
acute, scalene
B.
right, scalene
C.
acute, isosceles
D.
right, isosceles
Hint