Geometry: 2D Figures

Front

What is a polygon?

Back

A polygon is a closed figure formed by a finite number of straight line segments connected end to end.

Front

What defines a congruent figure?

Back

Congruent figures are figures that have the same shape and size.

Front

What are the properties of an equilateral triangle?

Back

An equilateral triangle has three equal sides and three equal angles, each measuring 60 degrees.

Front

How do you classify triangles based on angles?

Back

Triangles can be classified as acute (all angles less than 90°), right (one angle equal to 90°), or obtuse (one angle greater than 90°).

Front

What is a scalene triangle?

Back

A scalene triangle is a triangle with all sides of different lengths and all angles of different measures.

Front

What is the sum of the interior angles of a triangle?

Back

The sum of the interior angles of a triangle is always 180 degrees.

Front

What is a pentagon?

Back

A pentagon is a polygon with five sides and five angles.

Front

How do you classify triangles based on side lengths?

Back

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

Front

What is the difference between acute and obtuse triangles?

Back

An acute triangle has all angles less than 90°, while an obtuse triangle has one angle greater than 90°.

Front

What is a right triangle?

Back

A right triangle is a triangle that has one angle equal to 90°.