Which of the following statements justifies why the triangle shown below is not a right triangle? B 12 6 А 10 с O A. 52+10+122 ОВ. АС < AB O C. BC < AB D. BC + AC > AB

A

Step-by-step explanation:

A rule for every right angle triangle is a^2+b^2 =c^2

but here 5^2 + 10^2 does not equal to 12^2.

Therefore the answer is A.

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c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.