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# G.2 teacher types of triangle and angles of triangles

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### Transcript

• 1. Types of Triangle and Angles of Triangles Classification and Properties
• 2. Types of Triangles
• Classification by Angles:
• Right Triangle- the largest angle in the triangle is EXACTLY 90 
• Acute Triangle- the largest angle in the triangle is less than 90 
• Obtuse triangle-
• the largest angle in the triangle
• is greater than 90 
• Equiangular Triangle-
• All three angles are congruent
• 3. Types of Triangles
• Classification by Sides:
• Scalene Triangle : No sides have equal measure
• Isosceles Triangle :
• At least two sides have equal
• measure
• Equilateral Triangle :
• All three sides have equal
• measure
• 4. Theorem Example: 80  60  140  x 
• 5. Isosceles Triangle Theorem Example: 54  x 
• 6. Homework Examples: (6y  20)° (8y + 6)° 8y°
• 7. Homework Examples (5x  8)° (4x + 20)°
• 8. Homework Examples: y° (4y  22)° 60°
• 9. Homework Examples: 132° (3x + 2)° (2x  7)°