Question

please help me . Is the roped off area triangle ABC, a right triangle ?

Answer 1

yes a right triangle is and angle that is a angle at 90 degrees. A quick method if you don't ha protractor to measure is to measure the angle on a piece of paper like a posted note or note card since all the angles are 90 on them then see if they match up.

Answer 2

Answer:

Yes

Step-by-step explanation:

It is a right angle because it is 90 degrees.

Also,you can tell its a right angle because the variables a, b, and c

represent the Pythagorean Theorem which is used for finding missing lengths of a right triangle.

I didnt see the part at the bottom but the explanation for that would be

50+40> 30   True              40 squared + 30 squared= 50 squared

50+30> 40    True       or      1600+900=2500

40+30> 50    True                     2500=2500