Emily counts the triangles and parallelograms in an art piece and determines that there are altogether 42 triangles and parallelograms. if there are 150 total sides, how many triangles and parallelograms are there?

]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