(ASAP) Which of the following are right triangles? Make sure to show your work in the explantation box after you select
your choice.

Triangle with ABC with AC=6 , BC=9, and AB=12

Triangle with DEF with DE=8 , EF=10, and DF =13

(i put the picture if you need a visual)

Triangle with GHI with Gi=9, HI=12, and GH=15

Triangle with JKL with JL=10, KL=13 and JL=17

The length of the altitude is

Explanation:

Let ABC be an equilateral triangle.

It has sides of length 16 cm

Let AD be the altitude of the triangle.

We need to determine the length of an altitude.

Let AC = 16 cm and CD = 8 cm

Let us consider the right angled triangle ADC

Using the Pythagorean theorem, we have,

Substituting the values, we get,

The length of the altitude is