Define the unit in word form and complete the sequence of problems. a) 25 x 12 = 12 b) 19 x 15 = 19 Think: 10 + 2 Think: 20 - 1 = (10 x ) + (2 x )= (20 x )- (1 x )= + = - = =

]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