Topic 11 Flashcard

Front

What is an acute triangle?

Back

A triangle that has all three angles measuring less than 90 degrees.

Front

What is a right triangle?

Back

A triangle that has one angle measuring exactly 90 degrees.

Front

What is an obtuse triangle?

Back

A triangle that has one angle measuring more than 90 degrees.

Front

How do you classify triangles based on their sides?

Back

Triangles can be classified as equilateral (all sides equal), isosceles (two sides equal), or scalene (no sides equal).

Front

What is the sum of the angles in any triangle?

Back

The sum of the angles in any triangle is always 180 degrees.

Front

What is a quadrilateral?

Back

A four-sided polygon.

Front

What is a trapezoid?

Back

A quadrilateral with at least one pair of parallel sides.

Front

What is a square?

Back

A quadrilateral with four equal sides and four right angles.

Front

What is a parallelogram?

Back

A quadrilateral with opposite sides that are equal and parallel.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height.