Advertisements
Advertisements
प्रश्न
Find, giving a reason, the unknown marked angles, in a triangle drawn below:
Advertisements
उत्तर
We know that,
Exterior angle of a triangle is always equal to the sum of its two interior opposite angles (property)
110° = 2x + 3x
5x – 110°
x = `110^circ/5`
x = 22°
∴ 2x = 2 x 22 = 44°
3x = 3 x 22 = 66°
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.
If the bisector of the exterior vertical angle of a triangle be parallel to the base. Show that the triangle is isosce
In the given figure, AC ⊥ CE and ∠A : ∠B : ∠C = 3 : 2 : 1, find the value of ∠ECD.
Is the following statement true and false :
A triangle can have at most one obtuse angles.
The sum of two angles of a triangle is equal to its third angle. Determine the measure of the third angle.
In ΔPQR, If ∠R > ∠Q then ______.
Classify the following triangle according to sides:
Classify the following triangle according to sides:
Classify the following triangle according to angle:
The number of triangles in the following figure is ______. Their names are ______.
