211,378 views
43 votes
43 votes
Find the third angle of a triangle if two of its angles are equal to:

25 degrees and 80 degrees

and

25 degrees and 120 degrees

User Minas
by
2.2k points

2 Answers

12 votes
12 votes

Answer:

60 degrees

Explanation:

User PabloG
by
3.4k points
10 votes
10 votes

Answer:

75 degrees, 35 degrees

Explanation:

a. Adding 25 degrees and 80 degrees yields 105 degrees. The third angle of the given triangle must therefore be 180 degrees less 105 degrees, or 75 degrees.

b. Adding 25 degrees and 120 degrees yields 145 degrees. The third angle of the given triangle must therefore be 180 degrees less 145 degrees, or 35 degrees.

User FirstOne
by
2.0k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.