| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.08 |
| Score | 0% | 62% |
On this circle, line segment AB is the:
chord |
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diameter |
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circumference |
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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).
If angle a = 29° and angle b = 51° what is the length of angle c?
| 100° | |
| 118° | |
| 105° | |
| 85° |
The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 29° - 51° = 100°
Which of the following statements about a parallelogram is not true?
the perimeter of a parallelogram is the sum of the lengths of all sides |
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a parallelogram is a quadrilateral |
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opposite sides and adjacent angles are equal |
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the area of a parallelogram is base x height |
A parallelogram is a quadrilateral with two sets of parallel sides. Opposite sides (a = c, b = d) and angles (red = red, blue = blue) are equal. The area of a parallelogram is base x height and the perimeter is the sum of the lengths of all sides (a + b + c + d).
A trapezoid is a quadrilateral with one set of __________ sides.
equal angle |
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equal length |
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right angle |
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parallel |
A trapezoid is a quadrilateral with one set of parallel sides.
Solve for b:
-5b + 7 = \( \frac{b}{-1} \)
| 1\(\frac{3}{4}\) | |
| 3 | |
| -2\(\frac{4}{19}\) | |
| -6\(\frac{1}{4}\) |
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 equal sign and the answer on the other.
-5b + 7 = \( \frac{b}{-1} \)
-1 x (-5b + 7) = b
(-1 x -5b) + (-1 x 7) = b
5b - 7 = b
5b - 7 - b = 0
5b - b = 7
4b = 7
b = \( \frac{7}{4} \)
b = 1\(\frac{3}{4}\)