1) Place two points A and B. Draw the line segment AB.[br]2) Draw a line [i]d[/i] perpendicular to AB going through A.[br]3) Place a point C on [i]d[/i].[br]4) Create triangle ABC.[br]5) Display the measures of the three angles of the triangle.[br][br][br]
What can you say about the sum of the three angles of the triangle?
What can you say about the sum of the two acute angles of the right-angled triangle?