| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.12 |
| Score | 0% | 62% |
On this circle, line segment AB is the:
diameter |
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radius |
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chord |
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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).
A trapezoid is a quadrilateral with one set of __________ sides.
right angle |
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equal length |
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equal angle |
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parallel |
A trapezoid is a quadrilateral with one set of parallel sides.
When two lines intersect, adjacent angles are __________ (they add up to 180°) and angles across from either other are __________ (they're equal).
obtuse, acute |
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vertical, supplementary |
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supplementary, vertical |
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acute, obtuse |
Angles around a line add up to 180°. Angles around a point add up to 360°. When two lines intersect, adjacent angles are supplementary (they add up to 180°) and angles across from either other are vertical (they're equal).
Solve -6b + 4b = -9b + 4x - 2 for b in terms of x.
| -11x - 5 | |
| 1\(\frac{3}{10}\)x - \(\frac{3}{10}\) | |
| x - \(\frac{2}{3}\) | |
| \(\frac{1}{4}\)x + \(\frac{7}{8}\) |
To solve this equation, isolate the variable for which you are solving (b) on one side of the equation and put everything else on the other side.
-6b + 4x = -9b + 4x - 2
-6b = -9b + 4x - 2 - 4x
-6b + 9b = 4x - 2 - 4x
3b = - 2
b = \( \frac{ - 2}{3} \)
b = \( \frac{}{3} \) + \( \frac{-2}{3} \)
b = x - \(\frac{2}{3}\)
Order the following types of angle from least number of degrees to most number of degrees.
right, acute, obtuse |
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right, obtuse, acute |
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acute, obtuse, right |
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acute, right, obtuse |
An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.