| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.61 |
| Score | 0% | 72% |
Which types of triangles will always have at least two sides of equal length?
equilateral and right |
|
isosceles and right |
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equilateral, isosceles and right |
|
equilateral and isosceles |
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.
If angle a = 32° and angle b = 49° what is the length of angle c?
| 81° | |
| 75° | |
| 94° | |
| 99° |
The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 32° - 49° = 99°
If side x = 9cm, side y = 12cm, and side z = 5cm what is the perimeter of this triangle?
| 26cm | |
| 22cm | |
| 40cm | |
| 32cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 9cm + 12cm + 5cm = 26cm
Which of the following is not a part of PEMDAS, the acronym for math order of operations?
division |
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exponents |
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addition |
|
pairs |
When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
If side a = 6, side b = 2, what is the length of the hypotenuse of this right triangle?
| \( \sqrt{8} \) | |
| \( \sqrt{85} \) | |
| \( \sqrt{40} \) | |
| \( \sqrt{17} \) |
According to the Pythagorean theorem, the hypotenuse squared is equal to the sum of the two perpendicular sides squared:
c2 = a2 + b2
c2 = 62 + 22
c2 = 36 + 4
c2 = 40
c = \( \sqrt{40} \)