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-Triangle notes -classifying triangle worksheet -Additional polygon worksheets

TODAY : Triangles. -Triangle notes -classifying triangle worksheet -Additional polygon worksheets. Classifying Triangles According to the Length Of their Sides. 3 Types of Triangles. What is a Triangle:. t he word tri angle means three (tri) angles . every triangle has three

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-Triangle notes -classifying triangle worksheet -Additional polygon worksheets

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  1. TODAY : Triangles -Triangle notes -classifying triangle worksheet -Additional polygon worksheets

  2. Classifying Triangles According to the Length Of their Sides 3Types of Triangles

  3. What is a Triangle: • the word triangle means three (tri) angles. • every triangle has three angles and three sides. • the sum of all angles in a triangle equals 180º. • markings on a triangle will indicate if the triangles sides are equal in length • interior markings of a triangle will indicate if the triangle angles are equal in size

  4. 1. Equilateral Triangles • - all three sides are equal in length. • all three angles are equal in size • all angles are 60º

  5. 2. Isosceles Triangles • two sides that have same length • two angles that are equal • The side that is not the same length is the base.

  6. 3. Scalene Triangle • three sides of different length • three different angles

  7. 6 Names of Triangle Angles: • Right Angle • Acute Angle • Obtuse Angle • Reflex Angle • Straight Angle • Revolution Angle

  8. 1.Right Angle Triangle • a right angle triangle has one of its angles equal to 90º (one of its angles is a right angle). • Some scalene triangles are also right angle triangles • look for a box in a corner of a triangle = 90º

  9. 2.Acute Angle Triangle • all angles are smaller than 90º. • all three angles are acute.

  10. 3. Obtuse Angle Triangle • angles that are between 90º - 180º. • that is, one angle is obtuse.

  11. 4. Reflex Angle Triangle • an angle that is between 180º and 360º

  12. 5. Straight Line or Angle • a straight line has an angle of 180º

  13. 6. Revolution Angle (perigon) • An angle that has completed one full revolution (or circle) • An angle that has achieved 360º

  14. Homework: • Complete classifying triangles worksheet • Use ruler to draw triangles

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