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3 years ago

Please help me with the question below

Mathematics

2 answers:

I am Lyosha [343]3 years ago

8 0

a) Angle XBC = 55 because XY is parallel with BD

b) As given, XB = XC, so that triangle XBC is the equilateral triangle.

As XBC is equilateral triangle, angle XBC is equal to angle XCB

Angle XBC = 55° => Angle XCB = 55°

In a triangle, the total value of three corners are equal to 180°

So that: Angle XBC + Angle XCB + Angle BXC = 180°

=> 55° + 55° + Angle BXC = 180 °

=> Angle BXC = 70°

Read more on Brainly.com - brainly.com/question/15317951#readmore

jonny [76]3 years ago

5 0

Answer:

a) Angle XBC = 55 because XY is parallel with BD

b) As given, XB = XC, so that triangle XBC is the equilateral triangle.

As XBC is equilateral triangle, angle XBC is equal to angle XCB

Angle XBC = 55° => Angle XCB = 55°

In a triangle, the total value of three corners are equal to 180°

So that: Angle XBC + Angle XCB + Angle BXC = 180°

=> 55° + 55° + Angle BXC = 180 °

=> Angle BXC = 70°

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