Each of the six letters stands for a different number, 1 through 9. Using the three clues, can you deduce the number represented by each letter? ABC
DEF

B x C = A + D
The total of each row is 16.
The sum of the first two columns is the same, and the sum of the rightmost column is 12.

Which matrix multiplication is possible?

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

]supplementary angles are two angles that add up to . • complementary angles are two angles that add up to degrees. • adjacent angles share a and a • congruent angles have the measure. • an triangle has one angle that is greater than 90 degrees. • a triangle with angles 45°, 45°, and 90° would be a triangle