Question

find the unknown angle measure.
figure is not to scale.
question 4
score: 3/10
answered: 3/10
2.7 congruent right triangles
question help: ● video
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Explanation:

Step1: Recall the sum of angles in a triangle

The sum of the interior angles of a triangle is \(180^{\circ}\).

Step2: Set up the equation

Let the right - angle be \(90^{\circ}\), one angle is \(70^{\circ}\), and the unknown angle is \(x\). Then \(x + 70+90=180\).

Step3: Solve for \(x\)

Simplify the equation: \(x+160 = 180\). Subtract \(160\) from both sides: \(x=180 - 160\).

Answer:

\(20\)