Calculating angles in a triangle

Calculate the angle. Clue:-  80°+60°+? = 180°

• 40°
  

• 180°

• 90°

• 360°

Calculate the angle. Clue:- 75°+80° + ? = 180°

• 55°

• 25°

• 45°

• 180°

Calculate the angle

• 45°

• 40°

• 25°

• 50°

Calculate the angle

• 51°

• 82°

• 47°

• 72°

Calculate the angle

• 43°

• 130°

• 137°

• 127°

Calculate the angle

• 131°

• 32°

• 39°

• 141°

Calculate the angle

• 62°

• 63°

• 90°

• 117°

Calculate the angle

• 36°

• 45°

• 55°

• 135°

What type of triangle is this ?

• Scalene

• right angle

• eqilateral

• Isosceles

This is an isosceles triangle. The two base are _________

• reflex angles

• different

• SAME

• obtuse angle