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Yuri [45]
3 years ago
8

Find the value of x​

Mathematics
2 answers:
Naddika [18.5K]3 years ago
3 0

Answer:

x= -12

Step-by-step explanation:

∠2= (180°-36°)÷2 (base ∠s of isos. △)

∠2= 72°

m∠2= x +84

72= x +84

x= 72 -84

x= -12

madreJ [45]3 years ago
3 0

Answer:

The value if x is -12.

Step-by-step explanation:

Given that isosceles triangle have a same pair of angle. So in order to find the angles, you have to subtract it from 180° and 36°.

θ + θ + 36 = 180

2θ = 180 - 36

2θ = 144

θ = 144 \div 2

θ = 72

Next, the expression for ∠2 is x + 84 which is also 72°. So you have to solve it by comparing :

x + 84 = 72

x = 72 - 84

x =  - 12

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