"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."
Practice this standard with these minimal-prep activities & worksheets.
“This was a great resource for me to leave with a sub as practice for the unit we were finishing.”
“My students worked on this as a review with a sub one day while I was out. Everyone was engaged and enjoyed the activity. Thank you!!”
“My students loved this and the timing was perfect!”
“My kids loved being able to combine their love of art with our current math skill. It was challenging and fun at the same time. ”
“I loved the different levels. I used it as Level 1 = C, Level 2 = B, Level 3 = A. I also liked a different way to doodle.”
“My students loved this resource!”
“My student really enjoyed this activity! Thank you!”
“Students LOVED this. I used this for extra credit and the kids loved being able to make their mine craft character their own. It was so cool to see their character come to life and their happiness over how great it looked. SA and V worksheets were helpful too for review.”
—Sarah Hall's Shop
“Used for a sub plan as a review for my students. They enjoyed this activity.”
“Great resource and activity!”
“Used as a choice activity for students! They lived this activity!! ”
— Heather R.
“Super cute resource. My Year 9's really enjoyed this worksheet.”
—Order Of Ops
“Easy to use, great resource.”
“Excellent resource my students and I enjoyed it. ”
“This made a great check for understanding and allowed my students to enjoy a "project" where they could work in teams. ”
“The students loved getting creative with this resource!”
“My students absolutely love these pixel art projects. I love that they are self checking making it easier for grading! ”
“Great resource to use on sub day or as a quick check in class. Love”
— Ginger Wilson
“My class is a review of all kinds of math, so this resource was a fun way for students to review. They also enjoy coloring!”
— Stephanie W.
“Great resource! My students loved it and it was just what I needed.”
We'll send you 6 activities (66 pages!) — for free.