Refer to c^2=a^2+b^2 (^2 means squared)
C is the hypotenuse and will be the longest measure
So 15^2= 9^2+12^2
225=225
If both sides are equal then the triangle is a right triangle, if the hypotenuse (or c) is lower or higher than you can determine whether it’s obtuse or acute
It would be a right triangle
Answer:

Step-by-step explanation:
4/5*3/3-1/3
4/5*3/3-1/3*5/5
4*3/15-5/15
4*3-5/15
12-5/15
7/15
Answer:
8.=150 9.=200
Step-by-step explanation:
Answer:
360°
Step-by-step explanation:
The sum of the exterior angles for all polygons is 360°