Advertisements
Advertisements
प्रश्न
Find x, if the angles of a triangle is:
x°, 2x°, 2x°
Advertisements
उत्तर
Since, sum of all the angles of a triangle =180
x° + 2x° + 2x° = 180
5x° = 180
x° = `180/5`
x° = 36
APPEARS IN
संबंधित प्रश्न
In the given figure, AB || DE. Find ∠ACD.
In a triangle PQR, ∠P = 60° and ∠Q = ∠R, find ∠R.
In the following, find the marked unknown angle:
Find x, if the angles of a triangle is:
x°, x°, x°
In ∆ABC, ∠A = ∠B = 62° ; find ∠C.
The length of the three segments is given for constructing a triangle. Say whether a triangle with these sides can be drawn. Give the reason for your answer.
15 cm, 20 cm, 25 cm
The length of the three segments is given for constructing a triangle. Say whether a triangle with these sides can be drawn. Give the reason for your answer.
12 cm, 12 cm, 16 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].
P is a point on the bisector of ∠ABC. If the line through P, parallel to BA meet BC at Q, prove that BPQ is an isosceles triangle.
O is a point in the interior of a square ABCD such that OAB is an equilateral triangle. Show that ∆OCD is an isosceles triangle.
