What is the sum of -8 and
its opposite? what are they
called ?

What is the missing reason in step 5? linear pair postulategivendefinition of complementary anglescongruent complements theorem

Prove that quadrilateral is a rhombus.

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.