Aa and bb are n×nn×n matrices. check the true statements below: a. if two row interchanges are made in sucession, then the determinant of the new matrix is equal to the determinant of the original matrix. b. the determinant of aa is the product of the diagonal entries in aa. c. detat=(−1)detadetat=(−1)deta. d. if detadeta is zero, then two rows or two columns are the same, or a row or a column is zero.

proofs involving isosceles triangles often require special consideration because an isosceles triangle has several distinct properties that do not apply to normal triangles.(more about triangle types) therefore, when you are trying to prove that two triangles are congruent, and one or both triangles, are isosceles you have a few theorems that you can use to make your life easier.

step-by-step explanation:

an isosceles triangle has two congruent sides and two congruent angles. the congruent angles are called the base angles and the other angle is known as the vertex angle. ∠bac and ∠bca are the base angles of the triangle picture on the left. the vertex angle is ∠abc

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