A: IF TWO ANGLES ARE SUPPLEMENTARY, THEN ONE ANGLE IS ACUTE AND ONE IS OBTUSE. B: THE SUM OF THE MEASURES OF 2 ACUTE ANGLES IS GREATER THAN 90 DEGREES.

True or False?

Explanation:

A. False and or sometimes.

B. False and or sometimes.

What is our main objective here

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).