| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.16 |
| Score | 0% | 63% |
If AD = 13 and BD = 3, AB = ?
| 9 | |
| 10 | |
| 16 | |
| 12 |
The entire length of this line is represented by AD which is AB + BD:
AD = AB + BD
Solving for AB:AB = AD - BDWhat is 3a - 5a?
| a2 | |
| -2a | |
| -2a2 | |
| -2 |
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.
3a - 5a = -2a
If the length of AB equals the length of BD, point B __________ this line segment.
midpoints |
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trisects |
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intersects |
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bisects |
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.
What is the area of a circle with a radius of 4?
| 81π | |
| 25π | |
| 4π | |
| 16π |
The formula for area is πr2:
a = πr2
a = π(42)
a = 16π
On this circle, a line segment connecting point A to point D is called:
chord |
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diameter |
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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).