YouTube on MSNOpinion

How to use Law of Cosines to find the missing angles of a triangle given SSS

Learn how to solve for the lengths of the sides and the measures of the angles of a triangle using the law of cosines. The ...
BBC

Angles in triangles

So, what's with the biscuits? Oh a triangulator machine! Very cool! Right, there are four different types of triangle. First, here's an isosceles triangle, it has two equal length sides and two equal ...
YouTube on MSNOpinion

Using the isosceles triangle theorem to find the measure of x

👉 Learn how to find the missing side of a triangle. A triangle is a polygon with three sides. Triangles are classified on ...
BBC

Angles and triangles

An obtuse angle is between \(90^\circ\) and \(180^\circ\). To estimate the size of an angle, try thinking in terms of counting in quarter turns, or right angles. For example, the angle in the ...