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Bell Work

A. vertex. B. ABC. CBA. 1. C. Bell Work. Name the Angle in four different ways. 1) Use the vertex and a point from each side. . or. side. The vertex letter is always in the middle. 2) Use the vertex only. 1. B. side. This only works if there is only one angle at a vertex.

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Bell Work

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  1. A vertex B ABC CBA 1 C Bell Work Name the Angle in four different ways 1) Use the vertex and a point from each side. or side The vertex letter is always in the middle. 2) Use the vertex only. 1 B side This only works if there is only one angle at a vertex. 3) Use a number.

  2. Classifying Triangles

  3. 2 Ways to Classify • By Side Length • Equilateral • Isosceles • Scalene • By Angle Measurement • Right • Obtuse • Acute

  4. Side LengthEquilateral An Equilateral triangle is a triangle where all three side lengths are congruent. The dashes on the sides of the triangle mean they are the same length (congruent). Remember: Congruent just means equal. is the symbol used for congruent.

  5. Side LengthIsosceles An isosceles triangle is a triangle where at least two sides are congruent. The dashes on the sides of the triangle mean they are the same length (congruent).

  6. Side LengthScalene A scalene triangle is a triangle where all three sides have different measures. The different numbered dashes on the sides of the triangle mean they are all different lengths.

  7. Angle MeasurementRight A right triangle is a triangle that has exactly one right angle. The box in the corner of a triangle represents a right angle. Remember that a right angle is an angle that measures 90⁰.

  8. Angle MeasurementObtuse An obtuse triangle is a triangle that has exactly one obtuse angle. Remember that an obtuse angle is an angle that is greater than 90⁰.

  9. Angle MeasurementAcute An acute triangle is a triangle where all three angles are acute. Remember that an acute angle is an angle that is less than 90⁰.

  10. Equiangular Triangle • A triangle with all angles equal (60°).The same as an Equilateral Triangle

  11. You Try: Name the triangle by it’s angles and sides • Obtuse Isosclese Triangle

  12. You Try: Name the triangle by it’s angles and sides Right Scalene Triangle

  13. Video

  14. We will grade these with ABCD cards at the end of class! Practice:Worksheet

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