Angles, Polygons & Enlargement (Grade 8)
Free printable Grade 8 geometry worksheet: angles on a line, at a point and between parallel lines, polygon angle sums, quadrilateral properties, and enlargement.
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Grade 8 · Math worksheet
Name
Date
Math
Space: Angles, Polygons & Enlargement
Find each missing angle, name the polygon, state the quadrilateral property, or find the enlarged length.
- 1.Two angles on a straight line are 148 degrees and x degrees. Find x.
- 2.Two angles on a straight line are 94 degrees and x degrees. Find x.
- 3.Two angles on a straight line are 99 degrees and x degrees. Find x.
- 4.Three angles meet at a point: 50 degrees, 39 degrees, and x degrees. Find x.
- 5.Three angles meet at a point: 32 degrees, 140 degrees, and x degrees. Find x.
- 6.Two parallel lines are cut by a transversal. One angle is 86 degrees. Find its alternate angle.
- 7.Two parallel lines are cut by a transversal. One angle is 109 degrees. Find its alternate angle.
- 8.Two parallel lines are cut by a transversal. One angle is 118 degrees. Find its alternate angle.
- 9.Find the sum of the interior angles of a polygon with 7 sides (a heptagon).
- 10.Find the sum of the interior angles of a polygon with 8 sides (a octagon).
- 11.Find the sum of the interior angles of a polygon with 8 sides (a octagon).
- 12.What is the name of a polygon with 10 sides?
- 13.What is the name of a polygon with 7 sides?
- 14.What is the name of a polygon with 4 sides?
- 15.State one property of a parallelogram.
- 16.State one property of a kite.
- 17.State one property of a trapezium.
- 18.State one property of a trapezium.
- 19.A shape is enlarged by a scale factor of 0.5. If the original side length is 18, find the new side length.
- 20.A shape is enlarged by a scale factor of 3. If the original side length is 16, find the new side length.
- 21.A shape is enlarged by a scale factor of 2. If the original side length is 18, find the new side length.
- 22.A shape is enlarged by a scale factor of 4. If the original side length is 8, find the new side length.
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