How many vertices are shown in the figure?
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How many vertices are shown in the figure?
Note that perpendicular lines are straight lines that create a right angle of 90 degrees at their intersection point.
Let's locate the intersection points that create the right angles in the drawing.
The lines that create the right angles are:
AB is perpendicular to BC
BC is perpendicular to CD
CD is perpendicular to DA
DA is perpendicular to AB
BC is perpendicular to EF
AD is perpendicular to EF
Therefore, in the drawing there are 6 perpendicular lines.
6
What do the four figures below have in common?
A vertex is a corner point where two or more line segments meet. Think of it as a sharp corner on a shape - like the corners of a square or triangle.
No! Only count the labeled points (A, B, C, D, E, F). These are the actual vertices of the geometric figure. Other intersection points are just where construction lines cross.
Those small squares indicate right angles (90°). They help you understand the shape better, but don't change the vertex count - you still count each labeled corner point once.
List each labeled point systematically: A, B, C, D, E, F. That's 6 vertices total. Double-check by going around the figure in order!
Points E and F appear on the horizontal line, but they're still vertices because they're labeled and connect multiple line segments. Count all labeled points regardless of position.
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