There is a triangle with 3 large white vertices (points) that can be moved around.[br][b][color=#ff00ff]The pink slider controls the size of the pink angle at the bottom left vertex. [/color][/b] [br][br]Interact with the triangle, and use the "[b]Slide Me![/b]" tab to see what happens to the interior angles of the triangle. Then, answer the question at the bottom.
What do you notice about the [b]SUM[/b] of the measures of the [b][color=#ff00ff]pink angle[/color][/b], [b][color=#1e84cc]blue angle[/color][/b], and [color=#38761d][b]green angle[/b][/color] (the 3 interior angles) of a triangle?
Change the size of the angles in the triangle by dragging the vertices and the [b][color=#ff00ff]pink slider[/color][/b]. Is your observation in Question 1 the same for any size of a triangle?
Find the [b]fact[/b] that this exploration helps us visualize, and draw a visual on your [b]UNIT 1 Fact Sheet B[/b].