Angle in Semi circle

Angle in Semi circle

Angles in semicircle are 90^o​

​Example 1: Find a

​so,

​Example 2: Find angle BCD

​A

​B

​C

​D

​Angle ABC = 90^o (angle in semi circle)

​

​Angle BAC =

​So,

​

​Angle BCD = 180 - 90 -29.5 = 60.5

​QUIZ TIME

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Find Angle BAC

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Find the shaded angle

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Find the shaded angle

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Find x