It is an interactive powerpoint presentation developed as an example for elementary school teachers. It shows how an interactive powerpoint presentation can be a great formative assessment tool for young children.

1. Triangles
Amnah Albuloushi

2. Triangle
● A triangle is a figure that has 3 sides and 3
angles. The sum of the measure of the angles is
180°
● m<1 + m<2 + m<3 = 180°
1
2
3

3. Find the missing angle measure
<1 = 50° <2= 75° <3 = ?
○ 55°
○ 95°
○ 50°

4. Correct!!
○ Good Job! You correctly answered the
question!

5. Incorrect
○ You did not answer the question correctly.
Lets review the material.

6. Triangle
● A triangle is a figure that has 3 sides and 3
angles. The sum of the measure of the angles is
180°
● m<1 + m<2 + m<3 = 180°
1
2
3
Correct answer

7. Find the missing angle measure
○ <1 = 50° <2= 75° <3 = ?
○ 50 + 75 = 125
○ 180 – 125 = 55°

8. ○ Classify Triangles Using Angles
○ Acute Triangle
○ Right Triangle
○ Obtuse Triangle
○ Classify Triangles Using Sides
○ Scalene Triangle
○ Isosceles Triangle
○ Equilateral Triangle
How can we Classify Triangles !

9. Classify Triangles Using Angles
○ Acute Triangle
○ Properties: All acute angles.

10. Classify Triangles Using Angles
○ Right Triangle
○ Properties: 1 right angle.

11. Classify Triangles Using Angles
○ Obtuse Triangle
○ Properties: 1 obtuse angle.

12. Classify Triangles Using Sides
○ Scalene Triangle
○ Properties: No congruent sides.

13. Classify Triangles Using Sides
○ Isosceles Triangle
○ Properties: At least 2 congruent sides.
This symbol represents
that the sides are
congruent.

14. Classify Triangles Using Sides
○ Equilateral Triangle
○ Properties: 3 congruent sides.

15. Naming Triangles
○ Triangles have a 2 part name.
○ The first part of the name, names the angles
(acute, obtuse, or right)
○ The second part of the name, names the sides
(scalene, isosceles, or equilateral)
○ Example: Obtuse Scalene

16. Name the Triangle
○ The type of this triangle is Acute Scalene
○ TRUE
○ FALSE

17. Correct!!
○ Good Job! You correctly answered the
question!

18. Incorrect
○ You did not answer the question correctly.
Lets review the material.

19. Classify Triangles Using Angles
○ Acute Triangle
○ Properties: All acute angles.

20. Name the Triangle
○ Fill in the blank with the correct answer
…………
○ Acute Equilateral
○ Right Scalene

21. Correct!!
○ Good Job! You correctly answered the
question!

22. Incorrect
○ You did not answer the question correctly. try
again.

23. Congratulations!
○ Good job!
○ You have completed the lesson on triangles!