| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.28 |
| Score | 0% | 66% |
If a = c = 5, b = d = 3, what is the area of this rectangle?
| 15 | |
| 56 | |
| 63 | |
| 10 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 5 x 3
a = 15
The endpoints of this line segment are at (-2, 5) and (2, -3). What is the slope of this line?
| 1\(\frac{1}{2}\) | |
| -2 | |
| 2\(\frac{1}{2}\) | |
| -3 |
The slope of this line is the change in y divided by the change in x. The endpoints of this line segment are at (-2, 5) and (2, -3) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(-3.0) - (5.0)}{(2) - (-2)} \) = \( \frac{-8}{4} \)When two lines intersect, adjacent angles are __________ (they add up to 180°) and angles across from either other are __________ (they're equal).
vertical, supplementary |
|
obtuse, acute |
|
acute, obtuse |
|
supplementary, vertical |
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 angle a = 36° and angle b = 30° what is the length of angle c?
| 86° | |
| 114° | |
| 78° | |
| 74° |
The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 36° - 30° = 114°
A trapezoid is a quadrilateral with one set of __________ sides.
right angle |
|
equal angle |
|
parallel |
|
equal length |
A trapezoid is a quadrilateral with one set of parallel sides.