Question

3. Complete the sentence by choosing the proper option from the given choices.

There
with angle measures of 30°, 70°, and 80°.
A. is no triangle
B. is exactly 1 triangle
C. are exactly 2 triangles
D. are more than 2 triangles

Answer 1

B. is exactly 1 triangle

Explanation:

For any given triangle, the sum of the internal angles is
`180^(o)`. Thus from the given question, adding the given angles;

30° + 70° + 80° =
`180^(o)`

Therefore, only one triangle can be produced with the given measure of angles. This implies that there is exactly one triangle. So that the correct option is B.