Question

Which dimensions cannot create a triangle?
three angles measuring 10, 25, and 145
three sides measuring 9 m, 15 m, and 9 m
three angles measuring 40, 70, and 65
three sides measuring 6 cm, 8 cm, and 10 cm

Answer 1

Angles that create a triangle always add up to 180. 

To find sides that create triangles, we have to use the Triangle Inequality Theorem.
It's where side A + B will always be greater than side C
and B + C will always be greater than side A
and A + C will always be greater than side B.

So let's check all of these answers and pick the one that's incorrect.

A.
10 + 25 + 145 = 180?
Correct!

B. 
9 + 15 > 9?
Correct!
15 + 9 > 9?
Correct!
9 + 9 > 15?
Correct!

C. 
40 + 70 + 60 = 180?
Incorrect! 40 + 70 + 60 = 175 which is less than 180.

The answer is three angles measuring 40 m, 70 m, and 60 m.

Hope this helped! If you have anymore questions or don't understand, please comment or DM me. :)

Answer 2

The sum of the angle of the triangle is 180 degrees. In option c the sum of angles is 175 degrees that is why it is not the dimension of the triangle.

What is the triangle?

Triangle is a polygon that has three sides and three angles. The sum of the angle of the triangle is 180 degrees. The sum of the lengths of any two sides of a triangle must be greater than the length of the third side.

A.  The three angles measure 10, 25, and 145.

$10 + 25 + 145 = 180$

This is correct.

B.  The three sides measure 9 m, 15 m, and 9 m.

$9 + 15 > 9$

This is correct.

C.  The three angles measure 40, 70, and 65.

$40+70+65 \neq 180$

This is incorrect.

D.  The three sides measure 6 cm, 8 cm, and 10 cm.

$6+8>10$

This is correct.

Thus, option C is incorrect.

More about the triangle link is given below.

https://brainly.com/question/25813512