Do you know triangles?

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

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

3. If a triangle has angles 90⁰, 60⁰, 30⁰. Is it an right angled 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

6. If a triangle has 2 sides with equal lengths and 75⁰ angle between them. What is the type of triangle?
Equilateral Isosceless Right Angle triangle

7. If a triangle has 2 angles of 75⁰. What is the measure of third angle in degree?
25 30 15

8. If a triangle has 2 sides with equal lengths and 60⁰ angle between them. What is the type of triangle?
Equilateral Isosceles Both

9. The perimeter of an equilateral triangle is 15cm. What is the length of one side?
15cm 45cm 5cm

10. If a triangle has sides of 2cm, 3cm, 4cm, what is the type of triangle?
15cm 45cm 5cm

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