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3 years ago

Determine the value of x in the figure. answers: A) x = 60 B) x = 50 C) x = 130 D) x = 65

Mathematics

2 answers:

brilliants [131]3 years ago

5 0

Answer:

x = 65

Step-by-step explanation:

This is an isosceles triangle which means that 2 angles are the same and all the angles have to equal 180.

A - 60+60+50 = 170(not 180)

50+50+60 = 160(not 180)

A is eliminated.

B is eliminated because then it will be an equilateral triangle.

C - 130+130+50 = 310(not 180)

50+50+130 = 230(not 180)

C is eliminated which leaves D.

D = 65+65+50 = 180(TRIANGLE!!!!!!!!!!)

Arada [10]3 years ago

3 0

Answer:

Step-by-step explanation:

Since the triangle has 2 congruent sides then the triangle is isosceles and the base angles are congruent, thus

x = $\frac{180-50}{2}$ = $\frac{130}{2}$ = 65 → D

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