Congruent figures have the same shaps and same sizes
Similar figures have the same shapes but different sizes
From the given picture
The two circles have equal diameters (2 small squares), then
The two circles are congruent, then
The answer is Yes for congruent, No for similar
The second figure has a square and a rectangle
They are different in shapes and sizes, then
The two shapes are not congruent or similar
The answer is NO for congruent, No for similar
The 3rd figure has 2 T shapes equal in size, then
The two shapes are congruent
The answer is Yes for congruent, No for similar
The 4th figure has two right triangles but different in sizes
The small triangle is 1/3 the big triangle, then
The two triangles are similar
The answer is Yes for similar, No for congruent