Answer:
The greatest angle is 
Explanation:
According to angle sum property of a triangle, sum of all the angles of a triangle is equal to
°.
The given angles of a triangle are 
Therefore,
°
°
°

≈ 87.2°
≈ 71.8°
≈ 20.9°
Therefore, greatest angle is 
Plate tectonics are important to geoloigists because they explain how the continents make up the earths crust.
D or c because one of them was agriculture that would be c but they also did the other two known as d but swaying towards c
Minerals can be classified as many things such as...idealizes,sulfates, silicates,carbonates,sulfides and oxides