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Geometry help header imageNeed some geometry help? We have more than thirty excellent geometry lessons here, broken up in general topics. Make sure to browse all of the topics to find what you need, or search by keyword.

Graphing Lines

Shapes

Angles, Lines, and Points

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Recent Geometry Questions

Please help with this: In triangle XYZ, side y is 8cm, side z is 5cm, and the measure of angle Y is 75 deg; find the length of side x Tuesday March 19, 2024

Please help me understand and solve the second-order DM: yy" + y = (y')^2 Tuesday March 19, 2024

calculus problem: For which non-negative values of a does the function y=(x^2+3x)/x+a have a clear discontinuity point? Tuesday March 19, 2024

Vectors in equilibrium: A body is acted on by 3 forces in the (x,y)-plane. T_3 = 30.0j N, angle is 20.0 degrees, body is at equilibrium Monday March 18, 2024

f(x) = sqrt( (e^x) - 1 ): find the domain, find 1st and 2nd derivatives, and test for concavity Monday March 18, 2024

Featured Lesson

Read up on the properties of 30-60-90 right triangles.

Tutoring Resources

Online math lessons and links can be really great if you have a specific question, or you're looking for a refresher on a certain topic. But, if you need more help, you might need a geometry tutor. Whether that's a friend or teacher at school, a local tutor, or an online tutor, a real person can answer questions faster and explain things you don't understand better than any lesson or message board.