WorksheetsSSG 4.1 Classify Triangles and Triangle Angle Sum Theorem
Total questions: 35
Worksheet time: 3hrs 55mins
Name
Class
Date
1.
Name this triangle
a)
Acute, Scalene
b)
Obtuse, Scalene
c)
Right, Isosceles
d)
Acute, Equilateral
2.
What is an "Acute" Angle?
a)
Angle that measures 180
b)
An Angle that measures 90
c)
An angle that measures more than 90
d)
An angle that measures less than 90
3.
Classify the following triangle in as many ways as possible.
a)
Right, Equilateral
b)
Obtuse, Scalene
c)
Obtuse, Equilateral
d)
Right, Scalene
4.
Which type of triangle is pictured?
a)
Equilateral Triangle
b)
Right Isosceles Triangle
c)
Obtuse Scalene Triangle
d)
Obtuse Equilateral Triangle
5.
How many acute angles must an acute triangle have?
a)
2
b)
1
c)
4
d)
3
6.
An angle whose measure is exactly 90 degrees.
a)
acute
b)
vertical
c)
right
d)
straight
7.
a)
acute
b)
obtuse
c)
right
8.
a)
acute
b)
obtuse
c)
right
9.
a)
acute
b)
obtuse
c)
right
10.
a)
acute
b)
obtuse
c)
right
11.
a)
equilateral
b)
isosceles
c)
scalene
12.
a)
equilateral
b)
isosceles
c)
scalene
13.
a)
equilateral
b)
isosceles
c)
scalene
14.
a)
equilateral
b)
isosceles
c)
scalene
15.
A triangle has side lengths of 15 centimeters, 11 centimeters, and 9 centimeters. What kind of triangle is it?
a)
equilateral
b)
isosceles
c)
scalene
16.
Look at the sides of this triangle. What type of triangle is this?
a)
Equilateral
b)
Isosceles
c)
Scalene
d)
Obtuse
17.
Look at the sides and angles of this triangle. Which type of triangle is pictured?
a)
Equilateral Triangle
b)
Right Isosceles Triangle
c)
Obtuse Scalene Triangle
d)
Obtuse Equilateral Triangle
18.
Look at the sides and angles of this triangle. Which type of triangle is pictured?
a)
Equilateral Triangle
b)
Scalene Triangle
c)
Isosceles Triangle
d)
Right Triangle
19.
If a triangle has all angles less than 90° and two equal sides, what type of triangle is it?
a)
Acute Isosceles
b)
Acute Scalene
c)
Obtuse Scalene
d)
Obtuse Isosceles
20.
If a triangle has one angle greater than 90° and no equal sides, what type of triangle is it?
a)
Acute Isosceles
b)
Acute Scalene
c)
Obtuse Scalene
d)
Obtuse Isosceles
21.
The Triangle Sum Theorem states that the sum of all angles in a triangle is ______.
a)
45°
b)
90°
c)
180°
d)
360°
22.
What is the third angle of a triangle whose 1st angle is 34 and 2nd angle is 101?
a)
32
b)
39
c)
45
d)
54
23.
Solve for x.
a)
16
b)
11
c)
50
d)
6
24.
Find the measure of the missing angle.
a)
90o
b)
100
c)
130o
d)
50o
25.
Find the measure of the indicated angle.
a)
95
b)
85
c)
35
d)
45
26.
Solve for x.
a)
6
b)
-10
c)
7
d)
-9
27.
Solve for x.
a)
7
b)
9
c)
-11
d)
-8
28.
Find the measure of each angle indicated.
a)
62
b)
53
c)
71
d)
50
29.
Find the measure of each angle indicated.
a)
50
b)
20
c)
29
d)
48
30.
Which of the following terms best describes Angle d?
a)
Remote interior angle
b)
Corresponding angle
c)
Exterior angle
d)
Interior angle
31.
Find the indicated angle. (What is ?)
a)
91°
b)
81°
c)
89°
d)
109°
32.
What is the measure of angle b?
a)
36o
b)
56o
c)
63o
d)
117o
33.
Find the indicated angle measure. (What is ?)
a)
51°
b)
37°
c)
167°
d)
41°
34.
Find the value of x.
a)
A
b)
B
c)
C
d)
D
35.
Find m∠B.
a)
150°
b)
67°
c)
54°
d)
57°
100 %
