# Q2, W7: January 5 – 8 Pre-Algebra

Teacher Kristin Andreason Pre-Algebra 8 January 5-8 Focus 7: Angle Pair Relationships
Standard(s) Taught

MAFS.8.G.1.5: Use informal arguments to establish facts about the angle sum and exterior angle of triangles, about the angles created when parallel lines are cut by a transversal, and the angle-angle criterion for similarity of triangles.  For example, arrange three copies of the same triangle so that the sum of the three angles appears to form a line, and give an argument in terms of transversals why this is so.

Learning Targets and Learning Criteria
• informally prove the angle-sum theorem, the properties of angles when parallel lines are cut by a transversal and the angle-angle criterion for similar triangles.
• prove that the sum of any triangle’s interior angles will have the same measure as a straight angle.
• make conjectures regarding the relationships and measurements of the angles created when two parallel lines are cut by a transversal.
• apply proven relationships to establish minimal properties to justify similarity.
• present informal arguments as to whether or not triangles are similar based on Angle-Angle criterion.
Classroom Activities

Tuesday:

1. Students will log onto Zoom session.
2. I will do a review of solving equations along with some examples.
3. Students will do some task cards on solving two-step equations.
4. Students who finish can do Two-Step Equations Pennant Activity or an assigned Kahoot.

Wednesday:

1. Students will log onto Zoom session.
2. Students will do 45 minutes of iReady.

Thursday/Friday:

1. Students will log onto Zoom session.
2. I will introduce Parallel Lines Cut by Transversals.
3. Students will create a graphic organizer and a foldable on Parallel Lines Cut by Transversals.
4. Students will do the Angle Relationships Scavenger Hunt.
Assignments Due
• Two-Step Equation Task Cards due by the end of class on Tuesday, January 5.
• iReady quiz due by the end of class on Wednesday, January 6.
• Angle Relationships Scavenger hunt due by Friday, January 8.