Advertisements
Advertisements
प्रश्न
Find the unknown marked angles in the given figure:
Advertisements
उत्तर
In the figure,
∠A + ∠B + ∠C = 180° .....(Sum of angles of a triangle)
(m°− 5°) + 60° + (m°+ 5°) = 180°
⇒ m°− 5° + 60° + m° + 5° = 180°
⇒ 2m° = 180°− 65° + 5°
⇒ 2m° = 120°
⇒ ∴ m° = `(120°)/2=60°`
Hence ∠A = m°− 5° = 60°− 5° = 55°
and ∠C = m° + 5° = 60° + 5° = 65°
APPEARS IN
संबंधित प्रश्न
If each angle of a triangle is less than the sum of the other two, show that the triangle is acute angled.
Fill in the blank to make the following statement true:
Sum of the angles of a triangle is ....
Fill in the blank to make the following statement true:
An exterior angle of a triangle is equal to the two ....... opposite angles.
In the given figure, AB divides ∠DAC in the ratio 1 : 3 and AB = DB. Determine the value of x.
In the given figure, AM ⊥ BC and AN is the bisector of ∠A. If ∠B = 65° and ∠C = 33°, find ∠MAN.
State exterior angle theorem.
If two sides of a triangle are 5 cm and 1.5 cm, the length of its third side cannot be ______.
In the following, find the marked unknown angle:
Can a triangle together have the following angles?
55°, 55° and 80°
Jincy used these shapes to make drawings of fish.
Now you also use some shapes to draw the different sea animals shown below.
Sea urchin
Lobster
Eel
Red snapper
Octopus
Clam
Parrotfish
Prawn
Cuttlefish
Jellyfish
Squid
Silver pomfret
Crab
