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Rom4ik [11]
2 years ago
5

In the given figure find the value of x ?Thank you!​​

Mathematics
2 answers:
disa [49]2 years ago
8 0

Answer:

x = 92.5°

Step-by-step explanation:

both are isosceles triangles, with two angles similar

2y + 110 = 180°

2y = 180-110

y = 70/2 = 35°

2z + 65 = 180

2z = 180-65

z = 115/2 = 57.5°

so total angle, x = 35 + 57.5 = 92.5°

BartSMP [9]2 years ago
8 0

<u>EXPLANATION</u><u>:</u>

In ∆ ABC, ∠CAB = 65°

AB = AC

⇛∠ACB =∠CBA

Since the angles opposite to equal sides are equal.

Let ∠ACB = ∠CBA = A°

We know that

The sum of all angles in a triangle is 180°

⇛∠ACB + ∠CBA + ∠CAB = 180°

⇛A°+A°+65° = 180°

⇛2A°+65° = 180°

⇛2A° = 180°-65°

⇛2A° = 115°

⇛A° = 115°:2 =115°/2

⇛A° = 57.5°

∠ACB =∠CBA =57.5°

and

In ∆ BCD , ∠BCD = 110°

and

BC = CD

⇛∠BDC =∠CBD

Since the angles opposite to equal sides are equal.

Let ∠BDC =∠CBD = M°

The sum of all angles in a triangle is 180°

∠BCD+∠BDC + ∠CBD = 180°

⇛M°+M°+110° = 180°

⇛2M°+110°° = 180°

⇛2M° = 180°-110°

⇛2M° = 70°

⇛M° = 70° :2 =70°/2

⇛M° = 35°

.°. ∠BDC = ∠CBD = 35°

Now,

∠B = ∠ABC+ ∠CBD

⇛x = 57.5°+35°

⇛x = 92.5°

.°. x = 92.5°

<u>Answer</u><u>:</u> The value of x is 92.5°.

<u>Additional</u><u> comment</u><u>:</u> •The sum of all angles in a triangle is 180°

• the angles opposite to equal sides are equal. •The exterior angle of a triangle formed by extending one side is equal to the sum of the opposite interior angles.

<u>also</u><u> read</u><u> similar</u><u> questions</u><u>:</u> In the given figure find the value of x and y? Show you⁠…

brainly.com/question/26226336?referrer

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