Question

(HELP ASAP) ABC Is Isosceles m

Answer 1

• m∠A = 55°

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A and C are congruent angles opposite to congruent sides of the isosceles triangle.

• m∠A = m∠C

• 3x + 40 = x + 50
• 3x - x = 50 - 40
• 2x = 10
• x = 5

Find the measure of ∠A

• m∠A = 3×5 + 40 = 15 + 40 = 55

Answer 2

The angle A is 55°.

Explanation:

We know that,

→ <A = <C

Now the value of x will be,

→ 3x + 40 = x + 50

→ 3x - x = 50 - 40

→ 2x = 10

→ x = 10/2

→ [ x = 5 ]

Then the value of m<A is,

→ A = 3x + 40

→ A = 3(5) + 40

→ A = 15 + 40

→ [ A = 55° ]

Hence, the answer is 55°.