ACT MATH · Plane Geometry · Foundations

Plane Geometry: Two vertical angles measure math and math. Find math.

Polygons, Pythagorean theorem, circles.

Try the problem

Two vertical angles measure x+10x+10 and 3x−303x-30. Find xx.

Hint and answer

Concept to use

Square area $s^2$.

Hint

Vertical angles are equal.

Answer

20

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