This mathematics ClipArt gallery offers 41 images of right and oblique triangles that can be used with trigonometry problems involving solving triangles. There are also several images that can be used for application problems (crossing a river, lake, city block). For more triangles that can be used in trigonometry, see the Miscellaneous Triangles and Miscellaneous Right Triangles galleries.

Angle XOP=Θ and angle XOQ=- Θ. From a point in the terminal side of each a perpendicular line is drawn…

Angle XOP=Θ and angle XOQ=90+Θ. From a point in the terminal side of each a perpendicular line is…

Illustration that can be used to show that when given an angle, expressed as an inverse function of…

Illustration of an angle &alpha with the vertex at the center, O, of a circle with radius OB. AC and…

Illustration of an angle &alpha with the terminal side used to draw a triangle in quadrant I.

Illustration of an angle with the terminal side used to draw a triangle in quadrant II.

Triangle ABC with sides a,b,c labeled and angles A,B,C labeled and h labeled as height.

Illustration showing ambiguous case when the solution is not a triangle using law of sines.

Right triangle with angle of 25 ° 33' 7" and side of 37' 7"

Right triangle with angle of 29 ° 31' and side of 24.

Illustration of oblique triangle used to find distance across a river.

Illustration of oblique triangle used to find distance across a river.

Illustration of oblique triangle used to find distance across a lake.

Oblique triangle with perpendicular drawn and angle of measure 35 ° 38" given, and sides of 88'…

Oblique triangle with perpendicular drawn to form two right triangles, one with angle measuring 36 °…

Oblique triangle with side 18" and angles 60 ° and 38 ° 42'.

Oblique triangle with side 21' and angles 88 ° 24' 11" and 46 ° 14'.

Triangle ABC with sides a,b,c labeled and angles A,B,C labeled and h labeled as height.

Trigonometric reference triangles/angles drawn for 60 degree reference angel in quadrants I and II.

Right triangle ABC with angles A, B, C labeled and leg of 13 with hypotenuse of 15.

Right triangle ABC with angles A, B, C to be used for finding distance across a river. This is a trigonometry…

Inclined plane forming right triangle showing the velocity of a body sliding a distance,s, down a smooth…

Right triangle OCB that can be used to show the relationships between x, y, r, and Θ.

Right triangle OQP with angle of 35 degrees, height of .70 inches, and leg of 1 inch.

Right triangle OQP with angle of 40 degrees, height of .64 inches, and hypotenuse of 1 inch.

Right triangle ABC with a base angle of 67 degrees 4208 minutes and a hypotenuse of 23.47 ft.

Right triangle ABC with a leg of 23.85 feet and a hypotenuse of 35.62 feet.

Right triangle with side .024967 and hypotenuse .04792.

Special right triangle with angles 30 degrees, 60 degrees, and 90 degrees with side measures/relationships…

Triangle ABC and triangle ABC'. This illustration could be used to demonstrate the law of sines.

Trigonometric reference triangles/angles drawn for reference angel in quadrants I and II. This illustration…

Illustration showing an angle of 23 degrees 40 minutes making a triangle in a city block and marking…

Right triangle OCA, inside of Circle O is used to show that side AC is "opposite" O and side OC is "adjacent"…