| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.33 |
| Score | 0% | 67% |
If side x = 10cm, side y = 12cm, and side z = 5cm what is the perimeter of this triangle?
| 34cm | |
| 27cm | |
| 31cm | |
| 43cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 10cm + 12cm + 5cm = 27cm
If the length of AB equals the length of BD, point B __________ this line segment.
bisects |
|
midpoints |
|
trisects |
|
intersects |
A line segment is a portion of a line with a measurable length. The midpoint of a line segment is the point exactly halfway between the endpoints. The midpoint bisects (cuts in half) the line segment.
A trapezoid is a quadrilateral with one set of __________ sides.
equal length |
|
equal angle |
|
parallel |
|
right angle |
A trapezoid is a quadrilateral with one set of parallel sides.
The formula for the area of a circle is which of the following?
a = π r2 |
|
a = π r |
|
a = π d |
|
a = π d2 |
The circumference of a circle is the distance around its perimeter and equals π (approx. 3.14159) x diameter: c = π d. The area of a circle is π x (radius)2 : a = π r2.
Solve for x:
x2 - 5x - 6 = 0
| 6 or 2 | |
| 8 or -8 | |
| 6 or -1 | |
| -1 or 6 |
The first step to solve a quadratic equation that's set to zero is to factor the quadratic equation:
x2 - 5x - 6 = 0
(x + 1)(x - 6) = 0
For this expression to be true, the left side of the expression must equal zero. Therefore, either (x + 1) or (x - 6) must equal zero:
If (x + 1) = 0, x must equal -1
If (x - 6) = 0, x must equal 6
So the solution is that x = -1 or 6