| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.32 |
| Score | 0% | 66% |
Which of the following statements about a triangle is not true?
exterior angle = sum of two adjacent interior angles |
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perimeter = sum of side lengths |
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area = ½bh |
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sum of interior angles = 180° |
A triangle is a three-sided polygon. It has three interior angles that add up to 180° (a + b + c = 180°). An exterior angle of a triangle is equal to the sum of the two interior angles that are opposite (d = b + c). The perimeter of a triangle is equal to the sum of the lengths of its three sides, the height of a triangle is equal to the length from the base to the opposite vertex (angle) and the area equals one-half triangle base x height: a = ½ base x height.
The dimensions of this cube are height (h) = 8, length (l) = 7, and width (w) = 1. What is the volume?
| 210 | |
| 45 | |
| 63 | |
| 56 |
The volume of a cube is height x length x width:
v = h x l x w
v = 8 x 7 x 1
v = 56
If the base of this triangle is 3 and the height is 8, what is the area?
| 12 | |
| 84 | |
| 58\(\frac{1}{2}\) | |
| 90 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 3 x 8 = \( \frac{24}{2} \) = 12
The dimensions of this cube are height (h) = 8, length (l) = 4, and width (w) = 7. What is the surface area?
| 136 | |
| 286 | |
| 232 | |
| 212 |
The surface area of a cube is (2 x length x width) + (2 x width x height) + (2 x length x height):
sa = 2lw + 2wh + 2lh
sa = (2 x 4 x 7) + (2 x 7 x 8) + (2 x 4 x 8)
sa = (56) + (112) + (64)
sa = 232
Which of the following expressions contains exactly two terms?
binomial |
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polynomial |
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quadratic |
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monomial |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.