Angle Exercise Builder

Generate ready-to-publish angle riddles in seconds. Pick a figure type and the builder draws a clean problem image, a solution image, and a three-step explanation you can paste straight into an article.

Every answer is worked out. The builder picks starting angles at random, checks them against the angle-sum rules, and solves the figure with the same arithmetic that drew it. Whole-degree results, exact every time, built in your browser.

How to use it

Choose one of the five figure types — that draws a puzzle straight away. Press New numbers for a fresh set. The puzzle is written in your site language. Pick a visual style, drag the figure or the caption to arrange each image, then download the article text and every image as a .zip.

The riddle format

Every puzzle rests on the angle sum — angles on a straight line and inside a triangle add up to 180°, and inside a quadrilateral to 360°. Most are solved by adding the known angles and subtracting to find the unknown angle α. The isosceles triangle instead relies on its two equal base angles, and the algebraic triangle states the angles as expressions in x to solve. The answer is always a whole number of degrees.