Question

if a = 80 solve for x. si a = 80 resolver para x.

Explanation:

Step1: Identify triangle type

The triangle has two equal sides (marked with ticks), so it's isosceles. Thus, the two base angles (including \( x^\circ \)) are equal. Let the other base angle also be \( x^\circ \).

Step2: Use triangle angle sum

The sum of angles in a triangle is \( 180^\circ \). So, \( a + x + x = 180 \). Substitute \( a = 80 \): \( 80 + 2x = 180 \).

Step3: Solve for \( x \)

Subtract 80 from both sides: \( 2x = 180 - 80 = 100 \). Divide by 2: \( x = \frac{100}{2} = 50 \).

Answer:

50