standard_description: 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.
problem_activity: Problem 1
Consider the statement: A negative number raised to any whole number power will be negative.
Is this statement always, sometimes, or never true? Justify your response.
Problem 2
Consider the statement: An odd number raised to an odd power will be odd.
Is this statement always, sometimes, or never true? Justify your response.
Problem 3
What is the last digit of
$${7^{2023}}$$
? Explain.


aligns: no