Math Problem Statement

The diagram shows how a rhombus is made by joining two equilateral triangles.

The same rhombus can be made by joining two copies of an isosceles triangle.

Find the size of each angle of the isosceles triangle.

Solution

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Math Problem Analysis

Mathematical Concepts

Geometry
Triangles
Rhombus Properties
Angle Calculation

Formulas

Sum of angles in a triangle = 180°
Properties of a rhombus: Diagonals bisect each other at right angles

Theorems

Properties of Equilateral and Isosceles Triangles
Rhombus Angle Properties

Suitable Grade Level

Grades 8-10