CBSE Class 9 Maths Lines and Angles

• Q12.
  
• the exterior angles obtained on producing the base of a triangle both ways are 100° and 120°. find all the angles
• how to remember all the thereoms
• In a triangle ABC, if  angle A + angle B = 65 and  angle B +  angle C = 140 , then the measure of  angle B is (a) 40 (b) 25 c) 115 (d) 60
• one exterior angle of a triangle is 110 degree and one ko interior opposite angle is 30 degree find the remaining angles of the triangle
• What is angle sum property   
• In the given figure, AB||CD. Find the value of x.
  
• answer to all question  
  
• Please answer this question 
  
• Can a triangle have (i) Two right angles?     (ii) All angles less than 60^o? (iii) All angles equal to 60^o?  (iv)Two acute angles? Justify your statement in each case.

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