| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.20 |
| Score | 0% | 64% |
Which of the following is not true about both rectangles and squares?
the lengths of all sides are equal |
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the area is length x width |
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the perimeter is the sum of the lengths of all four sides |
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all interior angles are right angles |
A rectangle is a parallelogram containing four right angles. Opposite sides (a = c, b = d) are equal and the perimeter is the sum of the lengths of all sides (a + b + c + d) or, comonly, 2 x length x width. The area of a rectangle is length x width. A square is a rectangle with four equal length sides. The perimeter of a square is 4 x length of one side (4s) and the area is the length of one side squared (s2).
What is 8a2 - 4a2?
| 32a2 | |
| 32a4 | |
| 4a2 | |
| 12a4 |
To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.
8a2 - 4a2 = 4a2
If the length of AB equals the length of BD, point B __________ this line segment.
midpoints |
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bisects |
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trisects |
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intersects |
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 the base of this triangle is 5 and the height is 4, what is the area?
| 67\(\frac{1}{2}\) | |
| 10 | |
| 24\(\frac{1}{2}\) | |
| 22\(\frac{1}{2}\) |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 5 x 4 = \( \frac{20}{2} \) = 10
The dimensions of this cube are height (h) = 8, length (l) = 8, and width (w) = 2. What is the volume?
| 128 | |
| 54 | |
| 378 | |
| 105 |
The volume of a cube is height x length x width:
v = h x l x w
v = 8 x 8 x 2
v = 128