Unit 4 Chapter 6 Section 1c Triangles.notebook
February 17, 2016
Check Your HomeworkFind each angle.
A
< 1 = 35
< 6 = 46
4
C
3
9
14
B
5 6
7 8
2
1
10
13
D
11
12
< 1 = < 5 = < 9 = < 2 = < 6 = < 10 = < 3 = < 7 = < 11 = < 4 = < 8 =
< 12 =
Jun 6­7:28 PM
1
Unit 4 Chapter 6 Section 1c Triangles.notebook
February 17, 2016
Unit 4
Chapter 6 Section 1c
Triangles
Objective: To identify triangles by angle and side
Classify by Angle
Acute Triangle
Right Triangle
Guided Notes Page 9
Obtuse Triangle
Classify by Side
Scalene Triangle
Isosceles Triangle
Equilateral Triangle
Jun 6­8:17 PM
2
Unit 4 Chapter 6 Section 1c Triangles.notebook
February 17, 2016
Classify by Angles
1) Identify each triangle by its angles.
a)
c)
b)
2) The measures of 2 angles of a triangle are given. Tell whether the triangle is acute, right, or obtuse. a) 28o and 40o
b) 90o and 45o
c) 65o and 55o
d) 24o and 26o
Classify by Sides
3) Identify each triangle by its sides
a)
c)
b)
5 in
5 in
4 in
5 in
8 in
8 in
6 in
5 in
3 in
Classify by Angle and Side
4) Classify each triangle by sides and angles.
a)
b)
9 in
58 mm
35 mm
4 in
42 mm
5 in
c)
12 ft
12 ft
18 ft
Jul 9­8:14 AM
3
Unit 4 Chapter 6 Section 1c Triangles.notebook
February 17, 2016
5) Tell whether the line segments will make a triangle; if they can, then tell if the triangle is scalene, isosceles, or equilateral.
Add together the two smallest lengths.
If the sum is greater than the third side, it can be a triangle
If the sum is less than or equal to the third side, it cannot be a triangle
a) 12 ft, 3 ft, 11 ft
b) 4 m, 1.3 m, 2.7 m
d) 9 m, 3 m, 2 m
c) 7 cm, 7 cm, 7 cm
Jul 9­8:24 AM
4
Unit 4 Chapter 6 Section 1c Triangles.notebook
February 17, 2016
Jan 29­9:18 AM
5