| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.68 |
| Score | 0% | 74% |
A trapezoid is a quadrilateral with one set of __________ sides.
parallel |
|
right angle |
|
equal length |
|
equal angle |
A trapezoid is a quadrilateral with one set of parallel sides.
What is the area of a circle with a radius of 4?
| 49π | |
| 3π | |
| 16π | |
| 2π |
The formula for area is πr2:
a = πr2
a = π(42)
a = 16π
A right angle measures:
360° |
|
45° |
|
90° |
|
180° |
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.
When two lines intersect, adjacent angles are __________ (they add up to 180°) and angles across from either other are __________ (they're equal).
acute, obtuse |
|
vertical, supplementary |
|
obtuse, acute |
|
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 a = c = 2, b = d = 7, what is the area of this rectangle?
| 45 | |
| 63 | |
| 14 | |
| 40 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 2 x 7
a = 14