| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.31 |
| Score | 0% | 66% |
A trapezoid is a quadrilateral with one set of __________ sides.
parallel |
|
equal angle |
|
equal length |
|
right angle |
A trapezoid is a quadrilateral with one set of parallel sides.
A right angle measures:
45° |
|
360° |
|
180° |
|
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.
Solve for c:
-2c - 1 = \( \frac{c}{-3} \)
| 2\(\frac{4}{7}\) | |
| -\(\frac{2}{3}\) | |
| -1\(\frac{23}{31}\) | |
| -\(\frac{3}{5}\) |
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.
-2c - 1 = \( \frac{c}{-3} \)
-3 x (-2c - 1) = c
(-3 x -2c) + (-3 x -1) = c
6c + 3 = c
6c + 3 - c = 0
6c - c = -3
5c = -3
c = \( \frac{-3}{5} \)
c = -\(\frac{3}{5}\)
Solve for x:
4x + 8 = 2 + x
| -2 | |
| 3 | |
| 1\(\frac{3}{5}\) | |
| 1\(\frac{1}{4}\) |
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.
4x + 8 = 2 + x
4x = 2 + x - 8
4x - x = 2 - 8
3x = -6
x = \( \frac{-6}{3} \)
x = -2
If a = c = 2, b = d = 7, and the blue angle = 60°, what is the area of this parallelogram?
| 10 | |
| 14 | |
| 12 | |
| 27 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 2 x 7
a = 14