Can a triangle have two right angles? Explain why or why not.

No, a triangle cannot have two right angles because the sum of the angles would exceed 180 degrees.

Triangle and Quadrilateral Angles

7th Grade•60 minutes•Demonstrate that the angle sum of a triangle is 180Â° and use this to find the angle sum of a quadrilateral

I can determine the angle sums of triangles and quadrilaterals.

A triangle is a shape with three sides and three angles, and the sum of its interior angles is always 180 degrees.

Triangles can be classified by their angles (right, acute, obtuse) or by their sides (equilateral, scalene, isosceles).

The sum of the interior angles of a quadrilateral is 360 degrees, which can be shown by dividing it into two triangles.

This lesson includes 12 practice questions to reinforce learning.

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1. What is the sum of the interior angles of any triangle?

2. If a triangle has angles measuring 60 degrees and 80 degrees, what is the measure of the third angle?

3. What is the sum of the interior angles of any quadrilateral?

...and 9 more questions

Basics of Triangles and Quadrilaterals

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