| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.04 |
| Score | 0% | 61% |
If the length of AB equals the length of BD, point B __________ this line segment.
bisects |
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trisects |
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intersects |
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midpoints |
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.
Simplify 3a x 7b.
| 21\( \frac{a}{b} \) | |
| 21ab | |
| 21\( \frac{b}{a} \) | |
| 21a2b2 |
To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.
3a x 7b = (3 x 7) (a x b) = 21ab
If angle a = 54° and angle b = 33° what is the length of angle c?
| 93° | |
| 72° | |
| 123° | |
| 78° |
The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 54° - 33° = 93°
Solve for x:
9x + 7 > \( \frac{x}{-1} \)
| x > -\(\frac{16}{63}\) | |
| x > 1\(\frac{7}{47}\) | |
| x > \(\frac{63}{80}\) | |
| x > -\(\frac{7}{10}\) |
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.
9x + 7 > \( \frac{x}{-1} \)
-1 x (9x + 7) > x
(-1 x 9x) + (-1 x 7) > x
-9x - 7 > x
-9x - 7 - x > 0
-9x - x > 7
-10x > 7
x > \( \frac{7}{-10} \)
x > -\(\frac{7}{10}\)
When two lines intersect, adjacent angles are __________ (they add up to 180°) and angles across from either other are __________ (they're equal).
vertical, supplementary |
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supplementary, vertical |
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obtuse, acute |
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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).