| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.65 |
| Score | 0% | 73% |
A right angle measures:
180° |
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360° |
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45° |
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90° |
A right angle measures 90 degrees and is the intersection of two perpendicular lines. In diagrams, a right angle is indicated by a small box completing a square with the perpendicular lines.
Order the following types of angle from least number of degrees to most number of degrees.
acute, right, obtuse |
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right, acute, obtuse |
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acute, obtuse, right |
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right, obtuse, acute |
An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.
Solve for z:
z - 2 < 9 - 4z
| z < 2\(\frac{1}{2}\) | |
| z < 2\(\frac{1}{5}\) | |
| z < \(\frac{5}{6}\) | |
| z < -1 |
To solve this equation, repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the < sign and the answer on the other.
z - 2 < 9 - 4z
z < 9 - 4z + 2
z + 4z < 9 + 2
5z < 11
z < \( \frac{11}{5} \)
z < 2\(\frac{1}{5}\)
What is 8a6 + 6a6?
| 2 | |
| 14a6 | |
| 2a12 | |
| 14 |
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.
8a6 + 6a6 = 14a6
On this circle, line segment AB is the:
diameter |
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circumference |
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chord |
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radius |
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).