Read the statements shown below.

If a closed figure has three line segments joined end to end, it is a triangle.
If all the three angles of a triangle are less than 90°, it is an acute triangle.
Jovan constructed a triangle in the geometry class.

Question

Read the statements shown below. 
  
If a closed figure has three line segments joined end to end, it is a triangle. 
If all the three angles of a triangle are less than 90°, it is an acute triangle. 
Jovan constructed a triangle in the geometry class.

anonymous · Answer

Based on the given statements, which is a valid argument?

 It can be concluded that Jovan drew a rectangle.

 It cannot be concluded that Jovan drew a figure with three line segments joined end to end. 

 It cannot be concluded that Jovan drew an acute triangle.

 It can be concluded that Jovan drew a figure with one of the angles equal to 90°.