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```M7+ Unit 8: Angles and Triangles STUDY GUIDE
1. Classify the triangle by its sides and angles.
5. Find the value of x. The diagram is not to scale.
67°
41.4 cm
41.4 cm
129°
x°
6. Given
and
, find
41.4 cm
and
not drawn to scale
7. Classify ABC by its angles, when m A = 22, m
B = 84, and m C = 74.
2. In the figure,
.
. Find the measure of
B
8. Find the values of x and y. The diagram is not to
scale.
D
50o
E
(x – 1)°
G
45°
(y + 9)°
66°
A
In the diagram a || b. Use the diagram to answer
the question.
(Diagram not to scale.)
C
a
3. Find the value of the variable. The diagram is not to
scale.
b
1
3
2
4
113°
5
7
6
8
48°
x°
4. Find the values of x, y, and z. The diagram is not to
scale.
and
?
, what is
10. Name the corresponding angle to
46°
17°
65°
9. If
the measure of
x°
11. If
z°
= 65 , what is
2.
?
y°
12. Name the alternate interior angle to
4.
13. a. Find the value of a.
b. Find the value of the marked angles.
(6a + 6)°
17. Find the value of the variable if
and
not to scale.
1
2
3
l
4
5
(3a + 66)°
6
7
14. Name two angles adjacent to
The diagram is
m
8
.
E
not drawn to scale
A
18. Line r is parallel to line t. Find m 5. The diagram
is not to scale.
C
O
r
7
131°
1
B
D
t
15. Find the measure of AED for mBEC = 66 .
B
66 o
A
E
C
D
16.
. Find the value of x for p
to be parallel to q. The diagram is not to scale.
3 4
5
p
3
6
q
1 2
4
2
5
6
M7+ Unit 8: Angles and Triangles STUDY GUIDE - CONDENSED in Word
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
equilateral, acute
50
19
62
61
acute
x = 67, y = 60
60
6
65
5
20; 126º
and
66
50
7
131
```
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