The World Of Triangles
A triangle is a 3-sided polygon. Every triangle has three sides and three angles. When added together, the three angles equal 180°.
A triangle in which all three angles are less than 90°.
An obtuse triangle is a triangle in which one of the angles is greater than 90°.
A right triangle is triangle with an angle of 90°.
A triangle with three unequal sides.
An isosceles triangle is a triangle with (at least) two equal sides.
The following movie shows that if two sides of a triangle are congruent, then the angles opposite those sides are congruent.
An equilateral triangle is a triangle with all three sides of equal length.
An equiangular triangle is a triangle which has three equal angles.
Congruent triangles are triangles whose corresponding angles and sides are congruent.
They are exactly the same size and shape.
The hypotenuse of a right triangle is the triangle's longest side, i.e., the side opposite the right angle.
For a right triangle with legs a and b and hypotenuse c, a2+b2=c2.
Please complete the following quiz that covers the information that was just presented to you.