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I need help with this number 9 pls ​

I need help with this number 9 pls ​-example-1
User RASG
by
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1 Answer

2 votes

Answer:

angle B = 127.5 degrees

angle D = 127.5 degrees

Explanation:

The above figure is of a kite.

the non-vertex angles( I. e angle B and angle D) are congruent to each other in a kite.

Let angle B be x.

therefore, angle D is also x. ......(as they are congruent to each other)

The sum of all the angles in a quadrilateral is 360 degrees.

therefore,

65 + 40 + x + x = 360

105 + 2x = 360

2x = 360 - 105

2x = 255

x = 255/2

x = 127.5

therefore, angle B and Angle D are 127.5 degrees each.

User Rczajka
by
3.6k points