Obtuse Triangle Practice
Question 1
Which of the following triangles are obtuse triangles?
Answer
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Step by Step Solution
Step 1
For triangle I, there is no
internal angle that is >90°. Hence,
this is not an obtuse triangle.
Step 2
As for triangle II, it is not an obtuse
triangle for the same reason as above.
Step 3
As for triangle III, the angle at
vertex A is >90°. Hence, it is an obtuse
triangle.
Step 4
For triangle IV, it is an obtuse
triangle because the angle at vertex C
is >90°
Step 5
Clearly, only triangle III and IV are
obtuse triangles. Therefore, the answer
is C.
To close the steps,
obtuse triangle practice question page
