| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.11 |
| Score | 0% | 62% |
Which types of triangles will always have at least two sides of equal length?
equilateral, isosceles and right |
|
isosceles and right |
|
equilateral and isosceles |
|
equilateral and right |
An isosceles triangle has two sides of equal length. An equilateral triangle has three sides of equal length. In a right triangle, two sides meet at a right angle.
Order the following types of angle from least number of degrees to most number of degrees.
right, acute, obtuse |
|
acute, obtuse, right |
|
right, obtuse, acute |
|
acute, right, obtuse |
An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.
Solve for a:
a2 + 11a + 28 = 0
| 9 or -9 | |
| -4 or -7 | |
| 8 or -5 | |
| 4 or 1 |
The first step to solve a quadratic equation that's set to zero is to factor the quadratic equation:
a2 + 11a + 28 = 0
(a + 4)(a + 7) = 0
For this expression to be true, the left side of the expression must equal zero. Therefore, either (a + 4) or (a + 7) must equal zero:
If (a + 4) = 0, a must equal -4
If (a + 7) = 0, a must equal -7
So the solution is that a = -4 or -7
If a = c = 1, b = d = 4, what is the area of this rectangle?
| 32 | |
| 35 | |
| 4 | |
| 42 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 1 x 4
a = 4
On this circle, line segment CD is the:
circumference |
|
diameter |
|
chord |
|
radius |
A circle is a figure in which each point around its perimeter is an equal distance from the center. The radius of a circle is the distance between the center and any point along its perimeter. A chord is a line segment that connects any two points along its perimeter. The diameter of a circle is the length of a chord that passes through the center of the circle and equals twice the circle's radius (2r).