Atriangle can have two right angles?
true or false

Hey Buddy. 

Your answer is false. A triangle cannot have two right angles. Though, it can have one right angle. A triangle with a 90° (or one right) angle is called a right triangle. 

Feel free to ask more questions. I can assure that they will be correct and credible. :)

If it does not pass through the origin, or is anything other than linear, it is not proportional

1.) Non-proportional

2.) Proportional

3.) Non-proportional

4.) Non-proportional

5.) Proportional

6.) Proportional

7.) Non-proportional

10.) Non-proportional

11.) Non-proportional