| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.91 |
| Score | 0% | 58% |
On this circle, a line segment connecting point A to point D is called:
diameter |
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chord |
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radius |
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circumference |
A circle is a figure in which each point around its perimeter is an equal distance from the center. The radius of a circle is the distance between the center and any point along its perimeter. A chord is a line segment that connects any two points along its perimeter. The diameter of a circle is the length of a chord that passes through the center of the circle and equals twice the circle's radius (2r).
If the length of AB equals the length of BD, point B __________ this line segment.
trisects |
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midpoints |
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bisects |
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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 a = c = 7, b = d = 2, and the blue angle = 72°, what is the area of this parallelogram?
| 14 | |
| 4 | |
| 2 | |
| 36 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 7 x 2
a = 14
The dimensions of this trapezoid are a = 4, b = 7, c = 7, d = 9, and h = 3. What is the area?
| 7\(\frac{1}{2}\) | |
| 24 | |
| 28 | |
| 30 |
The area of a trapezoid is one-half the sum of the lengths of the parallel sides multiplied by the height:
a = ½(b + d)(h)
a = ½(7 + 9)(3)
a = ½(16)(3)
a = ½(48) = \( \frac{48}{2} \)
a = 24
What is 8a + 7a?
| 15a | |
| 1 | |
| 56a | |
| 15 |
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.
8a + 7a = 15a