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)
b° + 50° + b° = 180°
⇒ 2b° + 50° = 180°
⇒ 2b° = 180° − 50° = 130°
⇒ b° = `(130°)/2=65°`
Hence ∠A = b° = 65°
and ∠C = b° = 65°
APPEARS IN
संबंधित प्रश्न
The angles of a triangle are (x − 40)°, (x − 20)° and `(1/2x-10)^@.` find the value of x
Is the following statement true and false :
All the angles of a triangle can be greater than 60°.
Is the following statement true and false :
If one angle of a triangle is obtuse, then it cannot be a right angled triangle.
If two acute angles of a right triangle are equal, then each acute is equal to
An exterior angle of a triangle is equal to 100° and two interior opposite angles are equal. Each of these angles is equal to
In the given figure, show that: ∠a = ∠b + ∠c
(i) If ∠b = 60° and ∠c = 50° ; find ∠a.
(ii) If ∠a = 100° and ∠b = 55° : find ∠c.
(iii) If ∠a = 108° and ∠c = 48° ; find ∠b.
Classify the following triangle according to angle:
The length of the sides of the triangle is given. Say what types of triangles they are 3.4 cm, 3.4 cm, 5 cm.
In the following figure, l || m and M is the mid-point of a line segment AB. Show that M is also the mid-point of any line segment CD, having its end points on l and m, respectively.
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
