Privacy Policy
How we handle your information and protect your privacy on our Triangle Calculator
Introduction
Welcome to the Triangle Calculator provided by XinYuMaTou. This Privacy Policy explains how we handle information in connection with our free online geometry tool. We believe in transparency and want you to understand exactly what happens when you visit our website and use our calculator.
Our commitment to your privacy is straightforward: we do not collect personal information, we do not sell data, and we operate our tool with minimal data collection and processing. Please read this policy carefully before using the calculator.
How Our Calculator Works
This triangle calculator runs entirely on the client side — meaning all computation is performed directly inside your web browser using JavaScript. The numbers you enter into the input fields and the results displayed on the screen are processed on your own device.
None of the following are transmitted to any server controlled or operated by us:
- Input values: The side lengths and angle measurements you type into the calculator.
- Calculation results: The solved sides, angles, area, perimeter, and triangle classification.
- Visual diagram data: The canvas rendering of the triangle is drawn locally in your browser.
Information We Do Not Collect
We do not collect, store, or transmit any of the following kinds of information:
No Personal Information Required
You can use the calculator without creating an account, providing your name, entering an email address, or disclosing any other personal information. No registration or login is required at any time.
No Analytics or Tracking
We do not embed third-party analytics scripts (such as Google Analytics) in the calculator page. We do not use session cookies, tracking cookies, or pixel tags to record your browsing behavior or build user profiles.
No Form Submissions
The calculator does not send forms to any server. All interactions — entering values, clicking the Calculate button, pressing Reset — happen within your browser and do not generate HTTP requests to external systems.
Standard Web Server Information
Like virtually every website on the Internet, when you visit our pages your browser sends standard HTTP request headers to our web hosting provider. These headers may include information such as your browser type and version, your operating system, the referring URL, and, in some cases, your IP address.
This information is used solely to deliver the page content to you. Our hosting provider may retain standard access logs for a limited period of time for security and performance monitoring purposes. We do not use these logs for tracking or profiling.
Cookies Policy
A small browser storage entry (localStorage) may be set solely to remember your consent to the Cookie Notice displayed on our calculator page. This storage entry contains a simple flag indicating whether you accepted or declined the notice and does not contain personal data, identifiers, or tracking information.
Types of Storage Used
- Consent storage: A single entry that remembers whether you have already acknowledged the cookie notice so it is not shown to you repeatedly.
- No tracking or advertising cookies: We do not use tracking cookies, advertising cookies, or third-party cookies for behavioral advertising purposes directly from our code.
Third-Party Advertising Cookies
Our page may display third-party advertisements through Google AdSense to support the continued free availability of this calculator. Google AdSense and similar third-party ad networks may use their own cookies or similar technologies to serve personalized advertisements based on your browsing history across the web. These cookies are governed by the privacy policies of the respective ad networks, not by this policy.
You can opt out of personalized advertising through your Google Ad Settings or by adjusting your browser privacy controls. For more information about how Google uses data from partner sites, please visit the Google Privacy & Terms page.
Protection of Minors
Our Triangle Calculator is suitable for users of all ages and does not target children specifically. We do not knowingly collect personal information from any user, including minors. If you are a parent or guardian and you believe your child has provided us with personal information through some other channel, please contact us and we will promptly delete any such information.
Students and educators may use our calculator for homework, classroom activities, and test preparation without any privacy concerns since no personal data is collected or required.
Third-Party Services and External Links
Our website may contain links to external websites (including the XinYuMaTou main site) and may display third-party advertisements. Please be aware that:
- External links: We are not responsible for the privacy practices, content, or policies of third-party websites you reach through links on our pages.
- Advertising partners: Advertisements displayed on our pages are delivered by independent ad networks that have their own privacy policies and data practices.
- No endorsement: The appearance of a link or advertisement on our site does not constitute an endorsement of the linked website, service, or product.
We encourage you to read the privacy policy of every website you visit after leaving our calculator page.
Your Data Rights
Because we do not collect or store personal information on our servers, there is no personal data for us to provide access to, correct, or delete. However, you can exercise full control over any browser-side storage:
- Clearing browser storage: You can delete all local storage entries and cookies associated with our website at any time through your browser settings.
- Opting out of ads: You can opt out of personalized advertising by configuring your ad settings in Google or through industry-wide opt-out mechanisms such as the Network Advertising Initiative (NAI) opt-out page.
- Disabling JavaScript: While the calculator requires JavaScript to function, you can disable JavaScript on a site-by-site basis in your browser settings.
Data Security
Even though we do not collect personal information, we take basic security measures seriously. Our website uses HTTPS encryption to ensure that page content is delivered to your browser securely. The source code of the calculator is self-contained and does not load additional third-party scripts beyond standard advertising.
Changes to This Privacy Policy
We may update this Privacy Policy from time to time to reflect changes in our practices, legal requirements, or to provide additional clarity. When we make significant changes, we will revise the "Last Updated" date at the bottom of this page. We encourage you to review this page periodically to stay informed about how we protect your privacy.
Your continued use of the Triangle Calculator after any modifications to this Privacy Policy constitutes your acceptance of the updated terms.
Contact Us
If you have questions about this Privacy Policy, suggestions for improvements, or concerns about how your privacy is protected on our website, please reach out to us via email at xin_yu@7986455.xyz. We welcome feedback from students, teachers, engineers, and anyone who finds this tool useful.
We aim to respond to all legitimate privacy inquiries within a reasonable timeframe.
Last Updated: June 17, 2026