2D Shapes- Geometry Review

Front

How many obtuse angles are in an obtuse triangle?

Back

1

Front

Congruent means...

Back

same size, same shape

Front

How many acute angles must an acute triangle have?

Back

3

Front

What term best defines these lines? (parallel lines, straight lines, perpendicular lines, intersecting lines)

Back

parallel lines

Front

Quadrilaterals always have...

Back

4 sides

Front

What is a triangle with all sides equal called?

Back

Equilateral triangle

Front

What do you call a four-sided shape?

Back

Quadrilateral

Front

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

Back

180 degrees

Front

What type of angle is less than 90 degrees?

Back

Acute angle

Front

What do you call lines that intersect at a right angle?

Back

Perpendicular lines