∆abc is an isosceles triangle. the length of cb is 12 feet 4 inches and the congruent sides are

each 3/4 this length.

2. what is the perimeter of ∆abc?

a. 31 ft. 4 in.

b. 21 ft. 7 in.

c. 30 ft. 10 in.

d. 18 ft. 6 in.

3. in ∆def, de and df are each 6 feet 3 inches long. this length is 0.75 times the length of

fe. what is the perimeter of ∆def?

a. 12 ft. 4 in.

b. 17 ft. 2 in.

c. 14 ft. 7 in.

d. 20 ft. 10 in.

4. ∆jkl is an isosceles triangle with jl ≅ kl. if jk is three more than x, kl is 17 less than four

times x, and jl is 45 less than six times x, find x and the measure of each side.

e. 39, 39, 17

f. 17, 15, 17

g. 17,17,39

h. 42,42,42

Answer for 2nd is option c, for 3rd is option d, for 4th is option e

Step-by-step explanation:

As we know 1 ft.=12 in.

   ∴ The congruent sides are AB and AC respectively

    ∵  Perimeter of ΔABC =AB+AC+CB

                                        =9 ft. 3 in. + 9 ft. 3 in. +12 ft. 4 in.

                                        =30 ft. 10 in.

    2. In ΔDEF

    ∴ The congruent sides are DE and DF respectively

   ∵ Perimeter of ΔDEF =DE+DF+FE

                                        = 6 ft. 3 in. +6 ft. 3 in. +8 ft. 4 in.

                                        = 20 ft. 10 in.

    3. In ΔJKL

    ∴ The congruent sides are JL and KL respectively

   ∵ The dimensions of the ΔJKL are 39,39 and 17.

54

step-by-step explanation:

6x9