| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.38 |
| Score | 0% | 68% |
A coordinate grid is composed of which of the following?
y-axis |
|
x-axis |
|
origin |
|
all of these |
The coordinate grid is composed of a horizontal x-axis and a vertical y-axis. The center of the grid, where the x-axis and y-axis meet, is called the origin.
When two lines intersect, adjacent angles are __________ (they add up to 180°) and angles across from either other are __________ (they're equal).
supplementary, vertical |
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obtuse, acute |
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vertical, supplementary |
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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).
If a = c = 5, b = d = 9, what is the area of this rectangle?
| 27 | |
| 36 | |
| 45 | |
| 10 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 5 x 9
a = 45
The dimensions of this cube are height (h) = 5, length (l) = 4, and width (w) = 5. What is the surface area?
| 130 | |
| 82 | |
| 288 | |
| 286 |
The surface area of a cube is (2 x length x width) + (2 x width x height) + (2 x length x height):
sa = 2lw + 2wh + 2lh
sa = (2 x 4 x 5) + (2 x 5 x 5) + (2 x 4 x 5)
sa = (40) + (50) + (40)
sa = 130
If the base of this triangle is 9 and the height is 2, what is the area?
| 9 | |
| 60\(\frac{1}{2}\) | |
| 45 | |
| 84 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 9 x 2 = \( \frac{18}{2} \) = 9