2nd Q Monday Tuesday Wednesday Thursday Friday 10/1 2 Staff Collaboration Ch 4-1 Ch 4-2 Rev 1,2 Ch 4-3 Rev 3 10/1 9 Ch 4-4 Rev 4 Ch 4-5 Rev 5 Ch 4-6 10/2 6 Staff Collaboration Rev 6 Ch 4-7 Rev 7 Ch 4 Review Geo Ch 4 Test
Triangles and Angles
Mar 18, 2016
Triangles and Angles. Chapter 4-1. DNA. Equilateral All three sides are . Isosceles Two sides are . Scalene No sides are . Triangles (classified by side length). Obtuse Contains one obtuse . Right Contains one right . Acute Contains 3 acute s. - PowerPoint PPT Presentation
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2nd Q Monday Tuesday Wednesday Thursday Friday
10/12
Staff Collaboration
Ch 4-1 Ch 4-2 Rev 1,2 Ch 4-3 Rev 3
10/19
Ch 4-4 Rev 4 Ch 4-5 Rev 5 Ch 4-6
10/26
Staff Collaboration
Rev 6 Ch 4-7 Rev 7 Ch 4 Review Geo Ch 4 Test
Triangles and AnglesChapter 4-1
DNA
Triangles (classified by side length)
• Equilateral All three sides are
• Isosceles Two sides are
• Scalene No sides are
Triangles (classified by angle measure)• Obtuse Contains one obtuse
• Right Contains one right
• Acute Contains 3 acute s
• Equiangular All 3 s are
A. AB. BC. CD. D
0% 0%0%0%
A. acute
B. equiangular
C. obtuse
D. right
A. ARCHITECTURE The frame of this window design is made up of many triangles. Classify ΔABC.
A. AB. BC. CD. D
0% 0%0%0%
A. acute
B. equiangular
C. obtuse
D. right
B. ARCHITECTURE The frame of this window design is made up of many triangles. Classify ΔACD.
A. AB. BC. CD. D
0% 0%0%0%
A. acute
B. equiangular
C. obtuse
D. right
C. ARCHITECTURE The frame of this window design is made up of many triangles. Classify ΔADE.
1. A2. B3. C4. D
0%0%0%0%
A B C D
A. ΔABC andΔABD
B. ΔADE andΔAEB
C. ΔBED andΔACB
D. ΔACD andΔACB
A. Which of the following triangles are isosceles?
1. A2. B3. C4. D
0%0%0%0%
A B C D
A. ΔABE
B. ΔACE
C. ΔADE
D. ΔABD
B. Which of the following triangles is scalene?
Find Missing ValuesALGEBRA Find d and the measure of each side of equilateral triangle KLM if KL = d + 2, LM = 12 – d, and KM = 4d – 13.
Since ΔKLM is equilateral, each side has the same length. So KL = KM.
Substitution
Subtr. Prop =
Add. Prop =
Div. Prop =5 = d
2 = 3d – 13=
Lesson 1 Ex3
Find Missing Values
4(5) – 13
20 – 13
7
(5) + 2
7
=12 – (5) = 7
1. A2. B3. C4. D
0%0%0%0%
A B C D
A. x = 10 and all sides are 3.
B. x = 6 and all sides are 13.
C. x = 3 and all sides are 10.
D. x = 3 and all sides are 16.
ALGEBRA Find x and the measure of each side of equilateral triangle ABC if AB = 6x – 8, BC = 7 + x, and AC = 13 – x.
Lesson 1 Ex4
Use the Distance FormulaCOORDINATE GEOMETRY Find the measures of the sides of ΔRTS. Classify the triangle by sides.
Scalene!
A. AB. BC. CD. D
0% 0%0%0%
Find the measures of the sides of ΔABC. Classify the triangle by sides.
A. scalene
B. isosceles
C. equilateral
D. cannot be determined
HomeworkHomework
Chapter 4-1Chapter 4-1• Pg 205,Pg 205,
3-8, 13-20, 37, 3-8, 13-20, 37, 38, & 49 – 51.38, & 49 – 51.
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