Triangles
Shapes
Angles
Vocabulary 1
Vocabulary 2
100

The type of triangle with all sides congruent (equal).

What is equilateral triangle?

100

Has four sides, with all four sides congruent.

What is a rhombus?

100

An angle greater than 90 degrees and less than 180 degrees.

What is an obtuse angle?

100

A line in one direction forever.

What is a ray?

100

The distance from the center of a circle to the side.

What is the radius?

200

The type of triangle with no congruent (equal) sides or angles.

What is scalene triangle?

200
Has four sides, with opposite sides congruent and parallel as well as opposite angles congruent.
What is a parallelogram?
200

An angle that is 180 degrees.

What is a straight angle?

200

A line that separates mirrored sides of a shape.

What is a line of symmetry? 

200

The formula for the area of a circle.

What is Pi x r squared?

300

The type of triangle with one angle greater than 90 degrees.

What is an obtuse triangle?

300
A four sided figure with one pair of parallel sides and one pair of congruent sides.
What is an isosceles trapezoid?
300

An angle less than 90 degrees.

What is an acute angle?

300

A shape that is 3D, open, and has curvy lines.

What is a nonpolygon?

300

The area formula of a triangle.

What is 1/2 x base x height?

400

The type of triangle with one 90 degree angle and two congruent (equal) sides.

Looking for TWO names!

What is a right isosceles triangle?

400
A four sided figure with adjacent sides congruent
What is a kite?
400

90 degree angle.

What is a right angle?

400

A line between two points.

What is a line segment?

400
A 2D shape with straight lines and is closed.

What is a polygon?

500

A triangle with three angles less than 90 degrees.

What is an acute triangle?

500

Four sided figure with four right angles and opposite sides parallel and congruent.

What is a rectangle or square?

500

Angle more than 180 degrees.

What is a reflex angle?

500

Two angles that add together to make a 90 degree angle.

What are complementary angles?

500

A seven-sided shape.

What is a heptagon?