# What is the missing length of a triangle?

## What is the missing length of a triangle?

The Pythagorean theorem states that a2 + b2 = c2 in a right triangle where c is the longest side. You can use this equation to figure out the length of one side if you have the lengths of the other two. The figure shows two right triangles that are each missing one side’s measure.

How do you find the length of two sides of a triangle?

55 second suggested clip0:185:30Given two sides of a triangle determine the missing lengthYouTube

How many sides are there in a triangle?

3Triangle / Number of edges

### How do you find the missing side of a hypotenuse triangle?

60 second suggested clip0:166:11Finding a Missing Hypotenuse in a Right Triangle – YouTubeYouTube

How do you find the third side and perimeter of a triangle given two sides?

53 second suggested clip0:563:23How to Find Third Side of a Triangle – Perimeter Word Problems – YouTubeYouTube

Do triangle have 4 sides?

Question: HOW MANY SIDES DOES A TRIANGLE HAVE? The triangle has three (3) sides. The triangle is a polygon that contains three sides and three inner angles and three vertices. A triangle is a primitive form of geometry (polygon) that can only have three sides in its simplest form.

## How many sides and corners do triangle have?

three sides
A triangle is a shape formed when three straight lines meet. All triangles have three sides and three corners (angles). The point where two sides of a triangle meet is called a vertex.

How do you find the unknown side of a triangle?

How do you find the unknown side of a triangle? The Pythagorean theorem states that a2 + b2 = c2 in a right triangle where c is the longest side. You can use this equation to figure out the length of one side if you have the lengths of the other two. The figure shows two right triangles that are each missing one side’s measure.

What is the formula for the sides of a triangle?

use The Law of Cosines first to calculate one of the angles

• then use The Law of Cosines again to find another angle
• and finally use angles of a triangle add to 180° to find the last angle.
• ### How do you calculate the side of a triangle?

– Area of an Equilateral ∆ = √3/4 a² , where a@= side of the triangle. – So √3/4 a²= 4/√3 , – then a²= 4/√3 x 4/√3= (4/√3)² – So side of the ∆ = 4/√3= 4√3/3 – Side of the triangle a = 4 x 1.732/3 =2.3093- units.

How to find a missing angle in a triangle?

– We have a triangle with 60°, 100° and one missing angle. – The three angles will add up to 180° in total. – Adding the 2 known angles: 60° + 100° = 160° – We subtract this from 180° to find the missing angle. – 180° – 160° = 20°. – The missing angle is 20°.