Advertisements
Advertisements
प्रश्न
Find the measure of each angle of an equilateral triangle.
Advertisements
उत्तर
In equilateral triangle we know that each angle is equal
So ∠A = ∠B = ∠C
Now ∠A + ∠B + ∠C = 180° (by triangle property)
3∠A = 180°
∠A = 60°
Hence. ∠A = ∠B = ∠C = 60°
APPEARS IN
संबंधित प्रश्न
In a ΔABC, if AB = AC and ∠B = 70°, find ∠A.
In the pair of triangles in the following figure, parts bearing identical marks are congruent. State the test and the correspondence of vertices by the triangle in pairs is congruent.
On the sides AB and AC of triangle ABC, equilateral triangle ABD and ACE are drawn. Prove that:
- ∠CAD = ∠BAE
- CD = BE
In the following diagram, ABCD is a square and APB is an equilateral triangle.
(i) Prove that: ΔAPD≅ ΔBPC
(ii) Find the angles of ΔDPC.
State, whether the pairs of triangles given in the following figures are congruent or not:
O is any point in the ΔABC such that the perpendicular drawn from O on AB and AC are equal. Prove that OA is the bisector of ∠BAC.
In ΔABC, AD is a median. The perpendiculars from B and C meet the line AD produced at X and Y. Prove that BX = CY.
Given that ∆ABC ≅ ∆DEF List all the corresponding congruent sides
Given that ∆ABC ≅ ∆DEF List all the corresponding congruent angles
The congruent figures super impose each other completely.
