Question

If a closed figure has three line segments joined end to end, it is a triangle.
If one angle of a triangle measures 90°, it is a right triangle.
Matt constructed a triangle with one angle measuring 90° in the geometry class.
Based on the given statements, which is a valid argument?
@KamiBug

Answer 1

What are the arguments? :)

Answer 2

Give me a sec.

Answer 3

if its a closed figure and only one side is 90degrees then yes he has drawn a right triangle

Answer 4

Answer Choices:
A. It can be concluded that Matt drew a closed four-sided figure
B. It cannot be concluded that Matt drew a closed figure having three line segments joined end to end.
C. It cannot be concluded that Matt drew a triangle with sum of all three angles measuring 180
D. It can be concluded that Matt drew a right triangle

Answer 5

?

Answer 6

We know it is not A b/c a triangle has 3 sides.
It is not B b/c a triangle is a close figure.
It is not C b/c all triangles' angles sum up to 180 degrees.
--> We know it is D b/c a right triangle has a 90 degrees angle. :)

Answer 7

**closed

Answer 8

Okay thanks. do you agree? @briensmarandache

Answer 9

the previous statement says the definition of a triangle and a right triangle. so if the statement to follow uses the word triangle you know its a closed figure with connecting ends. and if i has a right angle in it, its a right triangle. so right off the bat, you know its a right triangle

Answer 10

yes i do

Answer 11

Thanks