Sarin learns Shapes and Solids in school part 7(Math Question)

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Read posting Sarin learns Lines and Angles (Math concept) to understand the concept of lines and angles. Read also posting Sarin learns Shapes and Solids in school (Math Concept) to know about shapes. 

Upper primary school mathematics question UPQ64

In the figure below, not drawn to scale, ABC and AED are straight lines and BE = DE. Find ∠ BDC.

Solution:

                              ∠ ADC = 1800 – 380 – 720 = 700

                              ∠ BDC = ∠ EBD = 330 (an isosceles triangle)

                              ∠ BDC = 700 – 330 = 370

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