Match the matrix property to its definition

Exercise and reference answers

Matching pairs

1. Left

   Symmetric matrix

   Right

   A = Aᵀ

2. Left

   Skew-symmetric

   Right

   A = −Aᵀ

3. Left

   Identity matrix

   Right

   I with 1s on diagonal

4. Left

   Orthogonal matrix

   Right

   AAᵀ = I

5. Left

   Singular matrix

   Right

   det(A) = 0