You use the words ending in ING for things and the ones ending in ED for people. The 2 last ones are ok.

1. Tom's behavior was so embarrassing. So, we were all embarrassed. 2. His reaction was so disappointing, that we were dissappointed. 3. When I asked a question related to the issue, he gave a confusing answer. 4. My leg is broken. or My leg was broken. (had makes it sound like you broke it on purpose. Like you hired someone to break your leg) 5. The picture shown to me was taken 50 years ago.

the correct way of the sentences are 1. Tom's behavior was so embarrassing. So we were all embarrassed 2. His reaction was so disappointing that we were disappointed 3. When I asked a question related with the issue, he gave a confusing answer. 4. I had my leg broken (only if you have to choose the multiple answers. if not the correct way is I had my leg broke ) 5. The picture, (tha he/she) showed to me was taken 50 years ago

~ed = feelings and mental states ~ing = properties of nouns It's that simple!

PARTICIPLES USED AS ADJECTIVES If something affects you or is doing something to you, use the present participle (-ing) form. If you are affected or feel something emotionally, use the past participle (-ed or -en) form. EXAMPLES: 1. a. I am embarrassed. (how you feel emotionally) b. I am embarrassing. (Your behavior makes your family and friends feel embarrassed.) c. My girlfriend is embarrassing. (Her behavior or outward appearance makes you feel embarrassed.) All of the examples you gave above use participles, but not all of them use participles as adjectives. This is where some of your confusion is coming from. Remember that participles are used not just as adjectives but to form active and passive tenses.