Download 4-6 Isosceles Triangles

Geometry
Tuesday
 Warm-ups
---Complete 4-1 Practice
---Check in/Discuss A#4.2
 Discussion/Notes/Guided
Practice
◦ Sec. 4.6 Isosceles Triangles
 Assignment:
◦ A#4.6 219 #9-13 odd, 15-28, 35-37
◦ Begin studying for Quiz – Sections
4.1, 4.2, 4.6
Quiz
Sections 4.1, 4.2, 4.6
Thurs 12/11
12/9/14
Today, you will be able to:
Use properties of Isosceles
Triangles
 Use properties of Equilateral
Triangles

Success Criteria:
Q&A
 Guided Practice
 Homework

Wacky Tacky Wednesday
Throwback Thursday
Parts of Isosceles
Triangles
*
*
Isosceles Triangle
Theorem
• Converse of the Isosceles Triangle Theorem:
Example #1
Guided Practice
Example #2
Guided Practice
• Name two congruent angles.
• Name two congruent
segments.
Self-Evaluation - Rate each learning target:
Use the properties of Isosceles Triangles
4
3
2
1
0
Equilateral Triangles
Example #3
∆𝐸𝐹𝐺 is
equilateral,
and 𝐸𝐻
bisects ∠𝐸.
Guided Practice
Triangle GHF is equilateral with 𝑚∠𝐹 =
3𝑥 + 4, and 𝑚∠𝐺 = 6𝑦, and 𝑚∠𝐻 = 19𝑧 + 3.
Find x, y, and z.
Find 𝑚∠1 and 𝑚∠2.
Find x.
Self-Evaluation - Rate each learning target:
Use the properties of Isosceles Triangles
4
3
2
1
0
Assignment:
A#4.6 Page 219
#9-13 odd, 15-28, 35-37
Quiz
Sections 4.1, 4.2, 4.6
Thurs 12/11