Riddles
Riddles 2.0
Trigonometry - Which Ratio
Math Riddles
Revision Scale Questions
100

It goes up and down the stairs without moving.


Carpet


100

Stealthy as a shadow in the dead of night, cunning but affectionate if given a bite. Never owned but often loved. At my sport considered cruel but that's because you never know me at all. What am I?

Cat

100

Use it when you know the length of the hypotenuse and the adjacent leg.

Cosine

100

If you divide thirty by half, and add ten, what do you get?

70


https://www.riddles.fyi/hard-riddles/

100


1.5


200

What has hands, but is not flesh, bone or blood?


Clock





200

If you have me you want to share me, if you share me you won't have me. What am I?

Secret

200

Use it when you know the hypotenuse and the opposite leg.

Sine

200

A word I know, Six letters it contains. Subtract just one, and twelve is what remains.

Dozens


https://www.riddles.fyi/hard-riddles/

200

The scale factor from triangle NQB to triangle N`Q`B` is...

1.25cm

300

The more there is the less you see.

Darkness

300

If I drink, I die. If I eat, I am fine. What am I?

Fire

300

Use it when you know the opposite and adjacent

Tangent

300

X is an odd number. Take an alphabet away from X and it becomes even. Which is that number?

Seven (Seven-S=Even)


https://www.riddles.fyi/hard-riddles/

300

The scale factor from triangle NPW to triangle N`P`W`is ...

1/4

400

You hear me once, you heard me again, and then I die until I am called again.

Echo

400

I'm tall when I'm young and short when I'm old. What am I?

Candle

400

What do you use if you want to find the missing angle of a triangle and you have the opposite side and the hypotenuse

Sin-1

400

 If you multiply this number by any other number, the answer will always be the same. What number is this?

Zero



https://www.riddles.fyi/hard-riddles/

400

A triangle has the side lengths of 2, 4, 7. Of the following, which side lengths below would create a scaled copy...

1, 2, 3           1.5, 3, 5.25            2.5, 5, 8.5

1.5, 3, 5.25

500

Creeping on its belly, curled into a ring.
Eyes forever open, beware its lethal sting.  

Snake

500

White and thin, red within, with a nail at the end. What am I?

Finger

500

What does SOHCAHTOA stand for?

Sin = O/H

Cos = A/H

Tan= O/A


500

 How can you take 2 from 5 and leave 4?

F I V E


https://www.riddles.fyi/hard-riddles/

500

A map has a scale of 2 cm = 15 km. A trip will be 7 cm on the map, the actual distance will be

52.5km