examday

/TMUA

Bonus question. The altitude of a triangle is a straight line drawn from a corner vertex down to the opposite side so that it hits that side at a right angle.

In a triangle $ABC$, the length of side $AB$ is equal to half the length of side $BC$. Given that the lengths of two of this triangle's altitudes are 4 units and 10 units, which of the following could be the length of the third altitude?

• I. 2 units
• II. 5 units
• III. 8 units