What is the intersection of planes ade and bea? a.) plane bed b.) plane abc c.) line bd d.) line ae

d.) Line AE

Step-by-step explanation:

We have been given a diagram. We are asked to find the intersection of planes ADE and BEA.

Upon looking at our given diagram, we can see that both planes intersect only at two points that are point A and E respectively.

We can also see that the line AE is a common side of both planes, therefore, line AE is the intersection of planes ADE and BEA.

78- acute
144- obtuse

This is because anything less than 90 degrees is acute. Think of it as they are cute because they are tiny xD

=90 is right angel

And anything above 90 and below 360 is obtuse because it's fat xD