Write the name of each artifact and the elevation at which each artifact was found using a positive integer , zero , or negative interger

2. The absolute value of -8 is 8. True
3. An isosceles triangle has three congruent sides.
 Nope. It has two

  4. The cosine is the ratio between the length of the opposite leg to the length of the hypotenuse.
 I have no idea.

 5. The boiling point of water is 212°C.
true

 
6.
The expression 28xyz has 4 terms.
true

 
7.
Shapes that have the same size and shape are said to be similar.
false

 8.
The points where the sides of a polygon meet are called the vertexes.
true

 
9. A heptagon is a seven-sided polygon.
true (hexagon)

 10.
An acute angle has more than 90° but less than 180°.
true