Advertisements
Advertisements
प्रश्न
The angles of a triangle are (x − 40)°, (x − 20)° and `(1/2x-10)^@.` find the value of x
Advertisements
उत्तर
Given that
The angles of triangle are
`(x-40^@),(x-20)^@ and (x/2-10)^@`
We know that
Sum of all angles of traingle is `180^@`
∴ `x-40^@+x-20^@+x/2-10^@=180^@`
`2x+x/2-70^@=180^@`
`(5x)/2=180+70^@`
`5x=250^@(2)`
`x=50^@(2)`
`x=100^@`
∴ `x=100^@`
APPEARS IN
संबंधित प्रश्न
If the bisectors of the base angles of a triangle enclose an angle of 135°, prove that the triangle is a right triangle.
Can a triangle have All angles more than 60°? Justify your answer in case.
Can a triangle have All angles less than 60° Justify your answer in case.
If each angle of a triangle is less than the sum of the other two, show that the triangle is acute angled.
If one angle of a triangle is equal to the sum of the other two angles, then the triangle is
Side BC of a triangle ABC has been produced to a point D such that ∠ACD = 120°. If ∠B = \[\frac{1}{2}\]∠A is equal to
Find the unknown marked angles in the given figure:
Classify the following triangle according to sides:
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
In the following figure, AB = BC and AD = BD = DC. The number of isosceles triangles in the figure is ______.
