Which of these diagrams shows a pair of vertical angles?
Which of these diagrams shows a pair of supplementary angles?
Which of these diagrams shows a pair of perpendicular lines?
Are the angles in the givenĀ diagramĀ supplementary?
Use definitions and theorems about lines and angles to solve problems and to justify relationships in geometric figures.
Make sense of problems and persevere in solving them.
Reason abstractly and quantitatively.
Construct viable arguments and critique the reasoning of others.
Model with mathematics.
Use appropriate tools strategically.
Attend to precision.
Look for and make use of structure.
Look for and express regularity in repeated reasoning.