Answer:
B seems to make sense
Explanation:
It says "I like gymnastics."
<span>Même si je suis jeune, je suis un acteur célèbre. Je suis allé <span>dans de nombreux films.
</span></span>
<span>but it would be better to say: "Even though I am young, I am a famous actor, I turned (or played) in many films<span>.(</span></span>mais il serait mieux de dire : "Même si je suis jeune, je suis un acteur célèbre, j'ai tourné (ou joué) dans de nombreux films.)
Answer:
1) J'allais - Je suis arrivé
2) Je suis allée - j'y ai rencontré
3) habitait - ont acheté
4) j'étais - <em><u>je ferai</u></em><em>*</em>
5) étaient - j'ai décidé
<em>*Your teacher made a mistake</em>. The instruction of the exercise says to put the verbs in the imparfait or passé composé, two tenses which evoke the PAST. But at the beginning of Mamadou's second sentence he begins with "Mais plus tard", to be translated as "But hereafter" and the verb that comes after is therefore "je ferai" (futur simple what evokes FUTURE). Confusion often happens because in imparfait, "faire" gives "ferais" but it is not at all the same time or the same meaning :)
I think you make a proof just like the other above. I took geometry a year ago and don't remember all the properties, just ignore tge word problem and make a regular proof just like with a regular triangle.