Respuesta :

Answer:

right

Step-by-step explanation:

69 + 21 is equal to 90 and all three angle of a triangle will be 180 so the last angle would be 90. And a right triangle will have an angle = to 90

potatobean4eva

Answer:

right

Step-by-step explanation:

69+21=90

180-90=90

90 degrees is a right triangle

i think