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Bell Work

Bell Work. Classify the triangles by the side lengths and angle measurements. Find the missing angle measures. x. y. 137°. Obtuse Isosceles. x = 137°. The angles are vertical angles. y + 137° = 180°. - 137° - 137°. y = 43°. The angles are supplementary angles. Right Isosceles.

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Bell Work

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  1. Bell Work Classify the triangles by the side lengths and angle measurements. Find the missing angle measures. x y 137° Obtuse Isosceles x = 137° The angles are vertical angles. y + 137° = 180° - 137° - 137° y = 43° The angles are supplementary angles. Right Isosceles

  2. AngLeg Exploration Activity • Work in your groups to complete the AngLeg Exploration Activity Worksheet. • Team leaders are in charge of keeping their group on task. • Be prepared to share your results at the end of the period. • If your group finishes early raise your hand, and I will give you your practice.

  3. What did you find out? • In order to form a triangle, the sum of the two smallest side lengths has to be GREATER than the third side. • If two triangles have the SAME side lengths we can say the two triangles are congruent. • This means the triangles are the same.

  4. What did you find out? • In a triangle, the largest angle is opposite the longest side. • The smallest angle is opposite the shortest side. • If a triangle has congruent sides, we can say the angles opposite them are also congruent. • This means they have the SAME measurement.

  5. Practice: Relationships in a Triangle Worksheet

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