Types of Triangles
A triangle with three uneven sides.
Scalene Triangle
A perfectly round shape
Circle
(2x2+6x+7) + (3x2-2x-2)
5x2+4x+5
grocunetn
When two angles have the same measure
36 solve for y
18
A triangle with two equal sides
Isosceles Triangle
A quadrilateral with two pairs of parallel, equal sides and four right angles.
Rectangle
(6x2+3x+2) + (5x2+2x-7)
11x2+5x−5
alcertvi sgnlae
Are formed opposite from each other when two lines intersect.
42 solve for y
21
A triangle with three equal sides
Equilateral Triangle
A four sided shape in which two sides are parallel
Trapezoid
(8x2+2x) - (10x2+2x-8)
−2x2+8
taajndce sgnlae
Side by side and have a common vertex and ray. They may or may not be congruent.
24 solve for y
12
A triangle that as three angles <90 degrees
Acute Triangle
A parallelogram with four equal sides. Opposite angles are also equal.
Rhombus
(12x2+6x+2) - (2x2+3x+5)
10x2+3x−3
lmeeyponmtcar sgnlae
Two angles that equals up to 90 degrees.
56 solve for y
28
A triangle that has one angle >90 degrees
Obtuse Triangle
A four sided shape in which opposite sides are parallel and equal. Opposite angel are also equal.
Parallelogram
(2x2+3x+4) + (5x2+2x+8)
7x2+5x+12
ryplpnuesmeta sgnlae
Two angles that equals up to 180 degrees.
140 solve for y
70