In a sale, normal prices are reduced by 18%. The sale price of an umbrella is £25.83
Work out the normal price of the umbrella​

step-by-step explanation:

m∠5 + m∠3 = m∠1   is true.

m∠5 + m∠6 = 180 is true

m∠2 +m∠3 = m∠6   is true

m∠2 +m∠3 +m∠5 = 180   is true

b.

step-by-step explanation:

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