Instructions Look on the board

Materials Hw packet – due next week 2 white papers per person Glue sticks – 2 per group Scissors – 2 per group

Integrated Math II Triangles P1 Goals: Name a triangle based on its characteristics Calculate the number of degrees in a triangle

Angles in a Triangle Activity 3 min – Each member in your group draw a triangle – Measure and sum all angles – What do they add up to? – Compare your answers

Categorizing Triangles Length of sides – Equilateral All equal sides Measure angles: Patterns? – Scalene All sides are different Measure angles: Patterns? – Isosceles Two equal sides Measure angles: Any patterns?

Angles – Equiangular All angles are the same Measure sides: any patterns? – Right One 90 degree angle What can you say about the other angles? – Obtuse One angle between 90 and 180 degrees – Acute All angles are less than 90 degrees

Proof Prove the number of degrees in a triangle by using your knowledge of parallel lines a b c d e f g

Classwork Complete worksheet