ClipArt ETC
1/11 of a 11 sided polygon

Fractions of 11-sided Polygon

1/11 of a 11 sided polygon

2/11 of a 11 sided polygon

Fractions of 11-sided Polygon

2/11 of a 11 sided polygon

3/11 of a 11 sided polygon

Fractions of 11-sided Polygon

3/11 of a 11 sided polygon

4/11 of a 11 sided polygon

Fractions of 11-sided Polygon

4/11 of a 11 sided polygon

5/11 of a 11 sided polygon

Fractions of 11-sided Polygon

5/11 of a 11 sided polygon

6/11 of a 11 sided polygon

Fractions of 11-sided Polygon

6/11 of a 11 sided polygon

7/11 of a 11 sided polygon

Fractions of 11-sided Polygon

7/11 of a 11 sided polygon

8/11 of a 11 sided polygon

Fractions of 11-sided Polygon

8/11 of a 11 sided polygon

9/11 of a 11 sided polygon

Fractions of 11-sided Polygon

9/11 of a 11 sided polygon

10/11 of a 11 sided polygon

Fractions of 11-sided Polygon

10/11 of a 11 sided polygon

11/11 of a 11 sided polygon

Fractions of 11-sided Polygon

11/11 of a 11 sided polygon

1/12 of a 12 sided polygon

Fractions of 12-sided Polygon

1/12 of a 12 sided polygon

2/12 of a 12 sided polygon

Fractions of 12-sided Polygon

2/12 of a 12 sided polygon

3/12 of a 12 sided polygon

Fractions of 12-sided Polygon

3/12 of a 12 sided polygon

4/12 of a 12 sided polygon

Fractions of 12-sided Polygon

4/12 of a 12 sided polygon

5/12 of a 12 sided polygon

Fractions of 12-sided Polygon

5/12 of a 12 sided polygon

6/12 of a 12 sided polygon

Fractions of 12-sided Polygon

6/12 of a 12 sided polygon

7/12 of a 12 sided polygon

Fractions of 12-sided Polygon

7/12 of a 12 sided polygon

8/12 of a 12 sided polygon

Fractions of 12-sided Polygon

8/12 of a 12 sided polygon

9/12 of a 12 sided polygon

Fractions of 12-sided Polygon

9/12 of a 12 sided polygon

10/12 of a 12 sided polygon

Fractions of 12-sided Polygon

10/12 of a 12 sided polygon

11/12 of a 12 sided polygon

Fractions of 12-sided Polygon

11/12 of a 12 sided polygon

12/12 of a 12 sided polygon

Fractions of 12-sided Polygon

12/12 of a 12 sided polygon

Illustration showing a triangle with an interior segment drawn

Triangle With Interior Segment

Illustration showing a triangle with an interior segment drawn

Illustration showing a triangle with an exterior segment drawn to show and exterior angle. This can be shown to show adjacent angles ACB and ACD as well.

Triangle With Segment Extended for Exterior Angle

Illustration showing a triangle with an exterior segment drawn to show and exterior angle. This can…

Illustration showing a scalene triangle (one that has no two sides equal).

Scalene Triangle

Illustration showing a scalene triangle (one that has no two sides equal).

Illustration showing an isosceles triangle (one that has two sides equal).

Isosceles Triangle

Illustration showing an isosceles triangle (one that has two sides equal).

Illustration showing an equilateral triangle (one that has three sides equal).

Equilateral Triangle

Illustration showing an equilateral triangle (one that has three sides equal).

Illustration showing a right triangle (one that has one right angle).

Right Triangle

Illustration showing a right triangle (one that has one right angle).

Illustration showing an obtuse triangle (one that has one obtuse angle).

Obtuse Triangle

Illustration showing an obtuse triangle (one that has one obtuse angle).

Illustration showing an acute triangle (one that has all three angles that are acute).

Acute Triangle

Illustration showing an acute triangle (one that has all three angles that are acute).

Illustration showing an equiangular triangle (one that has all three angles that are equal).

Equiangular Triangle

Illustration showing an equiangular triangle (one that has all three angles that are equal).

Illustration showing a triangle with exterior angles. This can be used to show the sum of the three angles of a triangle is equal to two right angles.

Triangle with Exterior Angles Drawn

Illustration showing a triangle with exterior angles. This can be used to show the sum of the three…

Illustration showing a triangle with angles A, B, and C labeled.

Triangle ABC

Illustration showing a triangle with angles A, B, and C labeled.

Illustration showing two equal triangles.

Equal Triangles

Illustration showing two equal triangles.

Illustration showing an isosceles triangle with a segment inside. This can be used to show that in an isosceles triangle the angles opposite the equal sides are equal.

Isosceles Triangle With Interior Segment Drawn

Illustration showing an isosceles triangle with a segment inside. This can be used to show that in an…

Illustration showing two equal triangles. This can be used to show that two triangles are equal if the three sides of the one are equal, respectively, to the three sides of the other.

Equal Triangles by Side Side Side

Illustration showing two equal triangles. This can be used to show that two triangles are equal if the…

Illustration showing two equal right triangles. This can be used to show that two right triangles are equal if a leg and the hypotenuse of the one are equal, respectively, to a leg and the hypotenuse of the other.

Equal Right Triangles by Hypotenuse Leg

Illustration showing two equal right triangles. This can be used to show that two right triangles are…

Illustration showing a triangle with a segment inside.

Triangle With Interior Segment Drawn

Illustration showing a triangle with a segment inside.

Illustration showing three triangles. This is used to show the following theorem: If two triangles have two sides of the one equal, respectively, to two sides of the other, but the included angle of the first triangle greater than the included angle of the second, then the third side of the first is greater than the third side of the second.

Three Triangles Used to Compare Sides

Illustration showing three triangles. This is used to show the following theorem: If two triangles have…

Illustration of a trapezium, a quadrilateral which has no two sides parallel.

Trapezium

Illustration of a trapezium, a quadrilateral which has no two sides parallel.

Illustration of a trapezoid, a quadrilateral which has two and only two sides parallel.

Trapezoid

Illustration of a trapezoid, a quadrilateral which has two and only two sides parallel.

Illustration of a parallelogram, a quadrilateral which has opposite sides parallel.

Parallelogram

Illustration of a parallelogram, a quadrilateral which has opposite sides parallel.

Illustration of a square, a rectangle with all sides equal.

Square

Illustration of a square, a rectangle with all sides equal.

Illustration of a rectangle, which is a parallelogram with all angles right angles.

Rectangle

Illustration of a rectangle, which is a parallelogram with all angles right angles.

Illustration of a rhombus, which is a rhomboid with all sides equal.

Rhombus

Illustration of a rhombus, which is a rhomboid with all sides equal.

Illustration of a rhomboid, which is a parallelogram which has its angles oblique angles.

Rhomboid

Illustration of a rhomboid, which is a parallelogram which has its angles oblique angles.

Illustration of a parallelogram with altitude and diagonal drawn.

Altitude and Diagonal of a Parallelogram

Illustration of a parallelogram with altitude and diagonal drawn.

Illustration of a parallelogram with diagonals drawn to show they bisect each other.

Parallelogram With Diagonals Bisecting Each Other

Illustration of a parallelogram with diagonals drawn to show they bisect each other.

Illustration of a two equal parallelograms. Two parallelograms are equal, if two sides and the included angle of the one are equal, respectively, to two sides and the included angle of the other.

Equal Parallelograms

Illustration of a two equal parallelograms. Two parallelograms are equal, if two sides and the included…

Illustration of a trapezoid, with the median drawn. The median of a trapezoid is parallel to the bases, and is equal to half the sum of the bases.

Trapezoid With Median

Illustration of a trapezoid, with the median drawn. The median of a trapezoid is parallel to the bases,…

Illustration of a polygon with a diagonal drawn. A diagonal of a polygon is a line joining the vertices of two angles not adjacent (AC).

Polygon With Diagonal

Illustration of a polygon with a diagonal drawn. A diagonal of a polygon is a line joining the vertices…

Illustration of a convex polygon. A polygon is convex when no side when produced will enter the polygon.

Convex Polygon

Illustration of a convex polygon. A polygon is convex when no side when produced will enter the polygon.

Illustration of a concave polygon. A concave polygon is a polygon of which tow or more sides, if produced, will enter the polygon.

Concave Polygon

Illustration of a concave polygon. A concave polygon is a polygon of which tow or more sides, if produced,…

Illustration of a two polygons. Polygons may be mutually equiangular without being mutually equilateral.

Equiangular Polygons

Illustration of a two polygons. Polygons may be mutually equiangular without being mutually equilateral.

Illustration of two polygons. Polygons may be mutually equilateral without being mutually equiangular (except for triangles).

Equilateral Polygons

Illustration of two polygons. Polygons may be mutually equilateral without being mutually equiangular…

Illustration of a polygon with interior angles drawn.

Interior Angles of Polygons

Illustration of a polygon with interior angles drawn.

Illustration of a polygon with exterior angles drawn.

Exterior Angles of Polygons

Illustration of a polygon with exterior angles drawn.

Illustration of an axis of symmetry drawn with respect to a hexagon.

Axis of Symmetry Drawn on a Hexagon

Illustration of an axis of symmetry drawn with respect to a hexagon.

Illustration of an axis of symmetry drawn with respect to a hexagon.

Axis of Symmetry Drawn on a Hexagon

Illustration of an axis of symmetry drawn with respect to a hexagon.