Classifying triangles mary marks
- 1. Classifying TrianglesMary S. Marks
- 2. ObjectiveToday we will classify triangles by their sides and their angles.
- 3. Given two angles in a triangle, we will find the third angle. What are triangles?Tell me what you know about triangles.(Note to teacher: Ask students what they know about triangles. Students should come up three sides, three angles, three vertices.)
- 4. Classifying Triangles by their SidesEquilateral Triangles - all sides are congruent
- 5. Isosceles Triangles - two sides are congruent
- 6. Scalene Triangles - no sides are congruentClassifying Triangles by their AnglesAcute Triangles - have three acute angles
- 7. Obtuse Triangles - have one obtuse angle
- 8. Right Triangles - have one right angleExamples of triangles
- 24. Sum of the measures of the angles in a triangleWhat type of angle do the angles in the triangle form?
- 25. How many degrees does this type of angle have?
- 26. How many degrees does this type of angle have?Finding the missing angleTwo angles are given, find the measurement of the third angle???
- 27. Finding the missing angleTwo angles are given, find the measurement of the third angle??
- 28. Finding the missing angleTwo angles are given, find the measurement of the third angle??
- 29. Finding the missing angleTwo angles are given, find the measurement of the third angle??
- 30. What is a triangle?EquilateralIsoscelesRight
- 31. Triangles in the Real World