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Recap: Sorting Triangles

Part of the Triangles section of Coddy's Geometry journey. Lesson 6 of 71.

Challenge

An isosceles triangle has its two equal sides marked.

$An isosceles triangle whose ticked sides are labelled 2x plus 3 and x plus 8, with base 6$

Find x.

Try it yourself

2x + 3 = x + 8

Solve for x

All lessons in Triangles

1Sides and Names

Three Sides, Three Corners Sorting by Sides Naming by Angles Ticks into Equations The Longest SideRecap: Sorting Triangles

4Area

Half the Rectangle Height Is Not a Side Right Triangle Area Finding the Height Finding the Base Any Side Can Be the Base Recap: Area

7Is It Right?

The Converse Testing a Triangle Acute or Obtuse?Sorting by the Test Recap: Right or Not

10Scale in the World

Shadows Across the River A Side with an Expression Nested Triangles Recap: Scale in the World