Math topic
Grade 8 geometry and shapes
2D and 3D shapes, angles, symmetry, location and movement on a grid. Here is what we have for Grade 8.
Online practice
- Corresponding angles and parallel lines
- Alternate interior angles and parallel lines
- Alternate exterior angles and parallel lines
- Vertical angles at a transversal
- Co-interior angles and parallel lines
- Angles formed by parallel lines and a transversal
- Solve for x: equal angles at a transversal
- Solve for x: co-interior angles
- Sum of the interior angles of a polygon
- Missing angle in a quadrilateral
- Missing angle in a pentagon
- Missing angle in a hexagon
- Interior angle of a regular polygon
- Interior angle of a regular polygon: round to the nearest tenth
- Exterior angle of a regular polygon
- Number of sides of a regular polygon from its angle
- Are two triangles similar? Compare angles
- Find the hypotenuse of a right triangle
- Find a leg of a right triangle
- Find a missing side of a right triangle
- Is it a right triangle? Converse of the Pythagorean theorem
- Is it a right triangle? Sides that are close
- Pythagorean theorem word problems: diagonals of rectangles
- Diagonals of rectangles: round to the nearest tenth
Free tools
Geometry and shapes in other grades:KindergartenGrade 1Grade 2Grade 3Grade 4Grade 5Grade 6Grade 7Grade 10Grade 12All grades