Triangles & Quadrilaterals

Front

What is an obtuse triangle?

Back

A triangle that has one angle greater than 90 degrees.

Front

How many obtuse angles can an obtuse triangle have?

Back

An obtuse triangle can have only 1 obtuse angle.

Front

What is a trapezoid?

Back

A quadrilateral with at least one pair of parallel sides.

Front

What defines a parallelogram?

Back

A quadrilateral with two pairs of parallel sides.

Front

What is an acute triangle?

Back

A triangle that has all angles less than 90 degrees.

Front

How many acute angles does an acute triangle have?

Back

An acute triangle has 3 acute angles.

Front

What is a square?

Back

A quadrilateral with 4 equal sides and 4 right angles.

Front

Are all squares also rhombuses?

Back

Yes, because all squares have equal sides and opposite sides that are parallel.

Front

Are all squares also rectangles?

Back

Yes, because squares have 4 right angles and 2 pairs of parallel sides.

Front

What is a rectangle?

Back

A quadrilateral with 4 right angles and opposite sides that are equal.