1. If a triangle has angles 135⁰, 15⁰, 30⁰. Is it an obtuse triangle? yes no

2. If a triangle has angles 115⁰, 25⁰, 40⁰. Is it an acute triangle? yes no

3. If a triangle has angles 90⁰, 60⁰, 30⁰. Is it a right angle triangle? yes no

4. A triangle has angles 60⁰, 60⁰, 60⁰. Is it an equilateral triangle? yes no

5. If a triangle has angles 25⁰, 75⁰, 80⁰. Is it an acute triangle? yes no