Question

Example 3. In the adjoining figure, ABCD is a square and
CDE is an equilateral triangle. Find
(i) AED
(ii) EAB
(iii) reflex AEC.

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Answer 1

Answer:

1.75

2.15

3.225

Step-by-step explanation:

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Answer 2

i. Angle AED

AD = DE

ADE is an isosceles Δ

angle ADE = 90 - 60 = 30°

Angle EAD +angle AED = 180 - 30 = 150°

angle AED = 150/2 = 75°

ii. Angle EAB

angle A = 90 - 75

= 15°

iii. reflex angle AEC

= 360 - (75+60)

= 360 - 135

= 225°

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