Geometry Worksheets for Angles: Missing Angles, Angle Pairs and Parallel Lines

Angle worksheets with fresh figures on every press and a key that gives the rule or subtraction behind each x.

5 pages

Angle Relationships WorksheetName the relationship, then find x: vertical angles, linear pairs, complementary and adjacent angles, angles around a point, and parallel lines for grade 8.
Measuring Angles WorksheetsMeasure angles with a protractor, read a printed protractor, draw an angle on a ray, or find the missing part of an angle. To the ten, the five or any degree, for grade 4 and up.
Find the Missing Angle WorksheetsFind x in a triangle, in a quadrilateral, on a straight line or around a point. Add isosceles triangles, exterior angles and parallelograms, or swap the numbers for expressions.
Complementary Supplementary Angles Worksheets With Answer KeyFind the complement, find the supplement, sort two separate angles into complementary, supplementary or neither, or solve for x. With figures, or as a text-only drill of 24.
Naming Angles WorksheetsCircle acute, right, obtuse, straight or reflex under each drawn angle, then name angles from three lettered points, vertex in the middle. No protractor; the key gives both letter orders.

Angles come back in grades 4, 7 and 8, and each time the job changes. A grade 4 student subtracts to find a missing angle on a diagram, a grade 7 student names the angle pair and writes an equation for x, and grade 8 adds triangles and parallel lines cut by a transversal.

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Each page here takes one of those jobs, so you print only what today's lesson needs. Three pages can put x inside expressions such as 3x + 5: angle relationships, missing angles, and complementary and supplementary angles. Every key follows on its own page, and a short code at the foot of both matches key to sheet. For the rest of geometry, see 2D shapes worksheets, coordinate plane worksheets and volume worksheets.

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