2. the absolute value of -8 is 8.
true or false 3. an isosceles triangle has three congruent sides.
true

false 4. the cosine is the ratio between the length of the opposite leg to the length of the hypotenuse.
true

false
5. the boiling point of water is 212°c.
true

false
6.
the expression 28xyz has 4 terms.
true

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

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

false
9. a heptagon is a seven-sided polygon.
true

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

false