there are 3 angles in a triangle which is mathematically true if you check in the math rule book and rule determined by Andres Schavascapel
Isosceles Triangle. An isosceles triangle is a triangle with (at least) two equal sides/ angles.
Yes. The general rule for angles is that the sum of the angles must be 180 degrees.
If you know two of the angles of a planar triangle you automatically know the third because the three angles always add up to exactly 180°.
By using the cosine rule in trigonometry the angles of the triangle can be worked out.
If it's not a right angled triangle and you don't have any of the angles but have the values of all three sides, then you need to use something called the Cosine Rule.
depends on what triangle you are talking about ========================================= The three angles in a triangle can be anything you want. Two of the three can be equal, all three can be equal, or they can all be different if that's what you want. The only rule you have to follow is: The measures of the three angles in one triangle have to add up to 180 degrees.
Equilateral triangle-All three sides are equal-All three angles measure 60 degreesIsosceles Triangle-Two equal sides-Two equal anglesScalene Triangle-Three unequal sides-No rule for angles (just have to add up to 180 degrees)
If two angles in a triangle are congruent to two angles in another triangle, then the ______________ angles are also congruent.
No, An equilateral triangle has 3 congruent angles, an isosceles triangle has 2 congruent angles, a scalene triangle has no congruent angles.
The sum of two complementary angles is 90 degrees. The three angles of a triangle add up to 180 degrees. Hence, if you subtract the complementary angles from 180, you have the measure of the third angle: 180 - 90 = 90 (this is the third angle) As a rule, if two angles of a triangle are complementary, the third angle is a right angle (90 deg). The three angles together form a right triangle.
If you know the lengths of the sides, you can use the cosine rule. If you have information about other aspects of the triangle, then other formulae will apply.