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BARSIC [14]
2 years ago
6

The angle measurements in the diagram are represented by the following expressions.

Mathematics
1 answer:
AfilCa [17]2 years ago
5 0

Given:

\angle A=10 x+24^{\circ}

\angle B=6 x+72^{\circ}

To find:

The value of x and measure of ∠A.

Solution:

Let C be angle the vertically opposite to ∠A.

The reference image for answer is attached below.

By vertical angle theorem:

m∠A = m∠C

m∠C = 10x + 24°

By the corresponding angle theorem:

m∠C = m∠B

10x + 24^\circ = 6x+72^\circ

Subtract 24° on both sides.

10x = 6x+48^\circ

Subtract 6x from both sides.

4x=48^\circ

Divide by 4 on both sides.

x = 12^\circ

The value of x is 12°.

\angle A=10 x+24^{\circ}

     =10 (12^{\circ})+24^{\circ}

     =144^\circ

The measure of ∠A is 144°.

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Yes, SAS.

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