Advertisements
Advertisements
Question
Calculate the unknown marked angles of the following figure :
Advertisements
Solution
We know that the sum of three angles of a triangle is 180°, therefore
In figure,
y + 80° + 20° = 180°
⇒ y + 100° = 180°
⇒ y = 180° − 100° = 80°
Hence y = 80°
APPEARS IN
RELATED QUESTIONS
ABC is a triangle in which ∠A — 72°, the internal bisectors of angles B and C meet in O.
Find the magnitude of ∠BOC.
Compute the value of x in the following figure:
Is the following statement true and false :
All the angles of a triangle can be less than 60°
Is the following statement true and false :
All the angles of a triangle can be greater than 60°.
Fill in the blank to make the following statement true:
A triangle cannot have more than ...... right angles.
In a Δ ABC, the internal bisectors of ∠B and ∠C meet at P and the external bisectors of ∠B and ∠C meet at Q, Prove that ∠BPC + ∠BQC = 180°.
If one angle of a triangle is equal to the sum of the other two angles, then the triangle is
Find, giving a reason, the unknown marked angles, in a triangle drawn below:
Can 30°, 60° and 90° be the angles of a triangle?
Can we have two acute angles whose sum is an acute angle? Why or why not?
