Advertisements
Advertisements
प्रश्न
Find x, if the angles of a triangle is:
2x°, 4x°, 6x°
उत्तर
Since, sum of all the angles of a triangle =180
2x° + 4x° + 6x° =180
12x° = 180
x° = `180/12`
x° = 15
APPEARS IN
संबंधित प्रश्न
Can a triangle have two acute angles?Justify your answer in case.
In the given figure, AB || DE. Find ∠ACD.
Is the following statement true and false :
If one angle of a triangle is obtuse, then it cannot be a right angled triangle.
Define a triangle.
An exterior angle of a triangle is 108° and its interior opposite angles are in the ratio 4 : 5. The angles of the triangle are
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.
The length of the sides of the triangle is given. Say what types of triangles they are 3.7 cm, 3.4 cm, 4 cm.
The image of an object placed at a point A before a plane mirror LM is seen at the point B by an observer at D as shown in the following figure. Prove that the image is as far behind the mirror as the object is in front of the mirror.
[Hint: CN is normal to the mirror. Also, angle of incidence = angle of reflection].
Can we have two acute angles whose sum is a right angle? Why or why not?
Can we have two acute angles whose sum is an obtuse angle? Why or why not?