The Question is from neet-chemistry the-solid-state , and it was created by the author A.RAMA NAGESWARARAO

Question

Which is the incorrect statement?

A.RAMA NAGESWARARAO · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
	**Primary Concept**: Properties of Triangles
	**Related Topics**: Angles, Sides, Types of Triangles (Equilateral, Isosceles, Right-angled)
	**Prerequisites**: Basic Geometry
## SOLUTION PATHWAY
**Given Information**:
	Statements about different types of triangles.
**Method & Steps**:
	1. Analyze each statement based on the properties of triangles.
	2. Identify the incorrect statement.
## OPTION ANALYSIS
[A] ✓: The sum of the angles in a triangle is 180 degrees. This is a fundamental property of all triangles.
[B] ✓: An equilateral triangle has three equal sides and three equal angles. This is the definition of an equilateral triangle.  Each angle measures $\frac{180}{3} = 60$ degrees.
[C] :x: A right-angled triangle can have two right angles. This is incorrect. A triangle's angles must sum to 180 degrees. If two angles are 90 degrees each, the third angle would be 0 degrees, which is impossible for a triangle.
[D] ✓: An isosceles triangle has two equal sides and two equal angles. This is the definition of an isosceles triangle.
## LEARNING AIDS
	**Common Mistakes**:
		1. Confusing the properties of different types of triangles: Carefully review the definitions and properties of each type of triangle (equilateral, isosceles, scalene, right-angled).
		2. Forgetting the angle sum property: Always remember that the sum of the angles in any triangle is 180 degrees.
	**Quick Tips**:
		1. Visualize the triangles: Drawing or visualizing the different types of triangles can help you understand their properties better.
		2. Remember the angle sum: The angle sum property is crucial for solving many geometry problems involving triangles.

A.RAMA NAGESWARARAO · Answer

The sum of the angles in a triangle is 180 degrees.

A.RAMA NAGESWARARAO · Answer

An equilateral triangle has three equal sides and three equal angles.

A.RAMA NAGESWARARAO · Answer

The correct Option is "A right-angled triangle can have two right angles."

A.RAMA NAGESWARARAO · Answer

An isosceles triangle has two equal sides and two equal angles.

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