Type the problem the way you would read it to students and the tool constructs the correct figure: a triangle with its altitude, an inscribed circle, a pyramid with hidden edges, function graphs with intersections. Every point is draggable, every relationship is preserved, and the export prints at true size in Word.
The tool understands figures as constructions — the way you would build them with ruler and compass — so the drawing is mathematically correct, not just visually similar.
Triangles from three sides, two sides and an angle, right, isosceles or equilateral. Altitudes, medians, bisectors, perpendicular bisectors. Orthocenter, centroid, incenter and circumcenter computed from the three vertices.
Circles by center and radius, through three points or by diameter. Tangents from an external point with the tangent points found for you. Common chords of two circles, cyclic quadrilaterals, inscribed angles.
Rectangles, squares, parallelograms, rhombuses, trapezoids and regular polygons inscribed in a circle. Diagonals, trapezoid heights, tick marks for equal sides and arrows for parallel sides.
Right-angle marks, single, double and triple angle arcs, equal-length ticks on sides, angle measures that update as you drag, side lengths written beside segments, dimension lines with arrows at both ends.
Pyramids with a lateral edge perpendicular to the base or regular pyramids, cuboids, prisms, cylinders, cones and spheres. Hidden edges switch to dashed automatically. Vertices are real points, so you can add diagonals, midpoints and intersections inside the solid.
Axes with tick marks; parabolas, lines, cubics, sine curves, hyperbolas and exponentials. Points on a graph, intersections of two graphs, extrema, tangents at a point, shaded area under a curve, dashed drop lines to the axes.
Every figure below is real output of the tool and opens ready to edit. The prompt used is shown underneath.
Simple mode has a single description box. You do not need to know construction names or coordinates — just write the problem as it appears in the textbook.
The three tabs work the same way and differ only in the set of figures. Geometry is for construction and proof problems, 3D Solids for pyramids, prisms and solids of revolution, Graphs for functions.
For example: Triangle ABC right-angled at A, AB = 4 cm, AC = 3 cm, draw the altitude AH. With measurements the tool draws to scale and labels the figure; without them it picks pleasing proportions.
A few seconds later the figure appears on a gridded sheet where each cell is 1 cm. The small line under the AI box tells you what the tool sees: how many points, segments, marks and measurements.
The AI box understands the current figure. Type Change AB to 8 cm, Add the median from A, Mark angle B as 60 degrees, Hide the label of H. The chips above the box are generated from the current figure — click one to fill it in.
Drag points to reshape, drag labels when text overlaps, click a side to add its length, click a triangle to make it right or isosceles. Switch to Advanced mode for the layers panel, drag-and-drop library and detailed properties.
Copy figure gives a sharp image you can paste straight into an exam. The Export menu offers high-resolution PNG, transparent PNG for slides and SVG for Word and PowerPoint. Name the figure and pick a background in the same panel before exporting.
Copy a prompt below, paste it into the description box and change the numbers to match your problem.
Draw triangle ABC right-angled at A, AB = 4 cm, AC = 3 cm, draw the altitude AH to BC and mark the right angle.
Gives a 3-4-5 triangle to scale, foot H computed, both lengths written on the sides.
Draw isosceles triangle ABC with apex A, BC = 6 cm, AB = AC = 5 cm. Draw the median AM and mark the two equal sides.
Equal-length ticks on AB and AC and a right-angle mark at M.
Given circle with center O and radius 3 cm and a point M 6 cm from O. Draw the two tangents MA and MB.
Tangent points A and B are found by the tool; drag M and both tangents follow.
Draw pyramid S.ABCD with square base of side 4, SA perpendicular to the base, SA = 5. Join AC and SC.
S sits directly above A; diagonal AC is dashed because it lies in the base.
Plot y = x² - 2x - 3 and the line y = x + 1 on the same axes and mark the intersections.
Intersections are computed exactly; coordinates can be added with an edit command.
Draw regular hexagon ABCDEF inscribed in a circle with center O and radius 2.5 cm, join O to the vertices.
The six radii are dashed so they do not clutter the main figure.
A few situations where teachers and students use the tool every day.
Every geometry question needs a figure with the right data. Type the problem, draw, copy into Word — a whole paper is done in one sitting instead of drawing each figure by hand or photographing a book.
Export transparent PNG to place on colored slides. Draw two versions of the same figure, before and after adding auxiliary lines, to guide students step by step.
Figures are drawn to scale in centimeters, so students can measure them with a ruler on the printed sheet — ideal for measuring and construction exercises in grades 6 to 9.
Share the figure link with students; they drag points to see that the altitude stays perpendicular and the median always passes through the midpoint, and understand why a property holds for every triangle.
Nothing to install, no account, works on lab computers or phones. Students describe the problem, look at the figure, then drag to test a hypothesis.
Drag vertex B and the altitude AH stays perpendicular to BC, midpoint M stays in the middle, a right triangle stays right. The tool stores constructions, not strokes, so you can edit freely without breaking the mathematics.
Click a segment to make it dashed, add an arrow or show its length. Click a triangle to make it free, right, isosceles or equilateral and to show angle measures and side lengths. No property panel to open.
Select an object to get handles: drag a corner to scale uniformly, drag an edge to change width or height, drag the round handle to rotate. Drag a whole group and every dependent point follows.
Copy figure puts an image on the clipboard for Word, PowerPoint or Google Docs. Export SVG for crisp printing — one grid cell equals 1 cm, so printed measurements are exact. Transparent PNG for slides.
The share button creates a link that contains the full drawing. Send it to a colleague; it opens ready to edit, no account needed.
Yes. Drawing, editing, copying and exporting are free with no sign-up. The AI part has a daily limit per anonymous user to prevent abuse; manual drawing and editing are unlimited.
Figures use thin black lines, italic point labels, right-angle marks, equal-length ticks and measurements placed beside segments, following textbook conventions. Printed in centimeters, one grid cell equals 1 cm, so the figure matches a ruler.
Fix just the wrong part with a short command such as Change BC to 8 cm or Add altitude AH, or drag the point directly. AI understands the current figure, so edits do not lose what is already correct. You can also build manually from the library in Advanced mode.
Yes. Pyramids, cuboids, prisms, cylinders, cones and spheres are drawn in oblique projection and hidden edges become dashed automatically. Vertices are real points, so you can add diagonals, midpoints and intersections inside the solid just like in plane geometry.
Copy figure produces an image at twice screen resolution, sharp enough to print. For perfectly crisp lines export SVG and insert it into Word or PowerPoint — it scales without pixelation.
The tool plots expressions in x using the usual elementary functions — polynomials, rational functions, roots, trigonometric, exponential and logarithmic — with a domain. Piecewise functions are plotted branch by branch, each with its own x-range.
Open the tool, type a textbook problem and watch the figure appear in seconds. No account needed.
Info@ninecode.vn
Ninequiz. A product of Ninecode JSC