| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.09 |
| Score | 0% | 62% |
If a = 8, b = 8, c = 8, and d = 1, what is the perimeter of this quadrilateral?
| 19 | |
| 16 | |
| 26 | |
| 25 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 8 + 8 + 8 + 1
p = 25
Which of the following statements about a parallelogram is not true?
a parallelogram is a quadrilateral |
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the area of a parallelogram is base x height |
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the perimeter of a parallelogram is the sum of the lengths of all sides |
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opposite sides and adjacent angles are equal |
A parallelogram is a quadrilateral with two sets of parallel sides. Opposite sides (a = c, b = d) and angles (red = red, blue = blue) are equal. The area of a parallelogram is base x height and the perimeter is the sum of the lengths of all sides (a + b + c + d).
Factor y2 - 14y + 48
| (y + 8)(y + 6) | |
| (y - 8)(y + 6) | |
| (y + 8)(y - 6) | |
| (y - 8)(y - 6) |
To factor a quadratic expression, apply the FOIL method (First, Outside, Inside, Last) in reverse. First, find the two Last terms that will multiply to produce 48 as well and sum (Inside, Outside) to equal -14. For this problem, those two numbers are -8 and -6. Then, plug these into a set of binomials using the square root of the First variable (y2):
y2 - 14y + 48
y2 + (-8 - 6)y + (-8 x -6)
(y - 8)(y - 6)
If the length of AB equals the length of BD, point B __________ this line segment.
bisects |
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trisects |
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intersects |
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midpoints |
A line segment is a portion of a line with a measurable length. The midpoint of a line segment is the point exactly halfway between the endpoints. The midpoint bisects (cuts in half) the line segment.
If angle a = 59° and angle b = 55° what is the length of angle c?
| 108° | |
| 93° | |
| 60° | |
| 66° |
The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 59° - 55° = 66°