1. Math Minutes: Imagine you have 6 toothpicks. How can you make 3 triangles using them?

2. Did you get it? #1 #2 #3

3. Let’s Classify Triangles A triangle that has one angle that measures exactly 90 degrees.

4. A triangle with 3 acute angles. 45 o 70 o 65 o

5. Let’s Classify Triangles A triangle with 1 obtuse angle. 25 o 30 o 125 o

6. Let’s Classify Triangles A triangle with three 60 degree angles. 60 o

7. Let’s Classify Triangles A triangle with each side a different length. 4 cm. 5 cm. 2 cm.

8. Let’s Classify Triangles A triangle with all 3 sides the same length. 7 cm.

9. Let’s Classify Triangles A triangle with at least 2 sides the same length. 10 cm. 6 cm.

10. Isosceles Triangles _____________________ Vertex Angle Base Angle Base