Question
(Difficulty: 2/10)
Find the length of the line segment AH.
This is actually a question from the latest public exam in Hong Kong (HKDSE, Hong Kong Diploma of Secondary Education Examination). See if you can pass the high school exam in Hong Kong! ;)
Solution
Thus by the Pythagoras' Theorem AH = 10.
(In case you have no idea about the Pythagoras' Theorem, it states that in a right-angled triangle, a^2 + b^2 = c^2, where c is the length of the longest side, a and b are the other two sides.)
Previous posts
Math challenge #1 - Find the remainder!
Math challenge #2 - Find the value of these recurring square roots