Question

in triangle abc angle a =60 degree ab=ac=7cm
a)what is the measure of angle c
a )find the perimeter of triangle abc​

Answer 1

Step-by-step explanation:

In Triangle ABC,

Angle A = 60

AB = AC = 7 cm

Therefore, Angle B = Angle C .......Angles opposite to equal sides are also equal

Let them be x

a) x + x + 60 = 180.....Angle sum property

2x = 180 - 60

2x = 120

x = 60

Therefore, Angle C = 60

b) Angle A = Angle B = Angle C

Therefore, Triangle ABC is an equilateral triangle.....All angles equal

side = 7 cm

Perimeter = 3 x side = 3 x 7 cm = 21 cm

Perimeter = 21 cm

Answer 2

Answer:

sorry

Step-by-step explanation:

don't know the answer