5 1 classifying triangles
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There are 7 types of triangles classified by their sides and angles: equilateral triangles have 3 congruent sides; isosceles triangles have 2 congruent sides; scalene triangles have no congruent sides; equiangular triangles have 3 congruent angles; acute triangles have 3 acute angles; obtuse triangles have 1 obtuse angle; and right triangles have 1 right angle. The lesson teaches how to classify triangles based on these properties of their sides and angles.
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5 1 classifying triangles
- 1. Lesson 5.1 Classifying Triangles Today, you will learn to… * classify triangles by their sides and angles * find measures in triangles
- 2. A B C ∆ ABC
- 3. Equilateral Triangle 3 congruent sides
- 4. Isosceles Triangle 2 congruent sides
- 5. Scalene Triangle no congruent sides
- 6. Equiangular Triangle 3 congruent angles
- 7. Acute Triangle 3 acute angles 60° 70° 50°
- 8. Obtuse Triangle 1 obtuse angle 95° 25°60°
- 9. Right Triangle 1 right angle 60° 30°
- 10. We classify triangles by their sides and angles. SIDES ANGLES Equilateral Isosceles Scalene Equiangular Acute Obtuse Right