Geometry
There exists a triangle that has only one acute angle.
False
How many roots can a quadratic equation have?
0, 1 or 2
Was year 2025 or 2026 a prime number?
Obviously, not.
(-3;3) is the vertex of the graph of the function:
f(x)=(x-3)2+3
F
We get the length of the hypothenuse of an isosceles right triangle if we divide the length of the leg by root 2.
No, multiply!
What are the roots of the following equation?
(x-2)(x+1)=0
2 and -1
Which year is going to be the next that is a prime number?
2027
The zero of the function f(x)=2x-4 is in x=...?
Do any three points in the plane determine a triangle?
Collinears don't.
The sum of a number and its square is 56. What is this number?
7
List three two-digit prime numbers that, after reversing its digits, remain a prime.
11,13,17,37,79
Any two linear functions have an intercept. True or false?
Parallels don't.
Is there a quadrilateral that has two pairs of equal sides but is not a parallelogram?
There is. A deltoid.
What do we call the part of the quadratic formula underneath the square root ?
Discriminant
Approximately how big is the largest prime number?
There isn't a largest one.
We map each person to his/her favourite ice cream flavour(s). Is this mapping a function?
No. (Yes, if...)
In a unit circle, the length of the arc subtended by a 30 degree inscribed angle is Pi/3, Pi/6 or 2Pi?
Pi/3
What are the coordinates of the vertex of the function:
f(x)=3(x-2)2+1
(2;1)
Is 12345678910987654321 a prime number?
Yes
The function g(x)=-5x+5 is strictly monotonously increasing within which interval?
None