Answer:

Step-by-step explanation:
Angles in a triangle add up to 180°


Angles in a straight line add up to 180°


Answer:
it is six fifths your welcome
Step-by-step explanation:
Answer:
40
Step-by-step explanation:
I think but what do you mean???!!!!
Answer:
a square is a rectangle as it's a shape with 4 sides with 90degree angles, and pairs of sides are equal.
It’s d for sure I really believe it’s d