Answer:
The front side of a spoon is curved inwards. Such a surface is called concave. The inside part of a bowl is also an example of a concave surface
A convex shape is the opposite of a concave shape. It curves outward, and its middle is thicker than its edges. If you take a football or a rugby ball and place it as if you're about to kick it, you'll see that it has a convex shape—its ends are pointy, and it has a thick middle.
Explanation:
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