Question

To find area of an isosceles triangle if two equal sides and angle b/w them are given

Answer 1

Answer:

In triangle ABD and triangle ACD,

AD = AD (Common)

angle BAD = angle CAD (given, AD is bisector of angle A)

angle ADB = angle ADC (given, AD is perpendicular to BC)

By SAS,

triangle ABD congruent triangle ACD

By CPCT,

AB = AC     angle ABD = angle ACD

or in an isosceles triangle, opposite sides of a triangle are equal.

Hence, it is an is an isoscees triangle.

Step-by-step explanation: