Apex help 10 points!!

5+12+c=90

17+c=90

c=90-17

c=73

Step-by-step explanation:

since this is a right triangle and right triangle will add up to 90 and bla bla bla

I amn't sure tho but if this is wht u learnt then here u go hope it helped

13

Step-by-step explanation:

This is a hypotenuse so we wanna use pythagorean theorem

a^2 + b^2 = c^2

12^2+ 5^2=169

square root of 169 is 13

pls oh pls mark brainliest

1. sometimes

2. never true

3. sometimes

step-by-step explanation:

these are pretty self explanatory if you know what supp right and com angles are