Vocabulary
4.1
4.2
4.3
4.6
100

equal or same measure

What is congruent?

100

Two ways you can classify triangles

What is by their sides and by their angles?

100
A triangle that has all sides the same length
What is equilateral
100
This is the number of sides on a quadrilateral
What is 4
100
A shape that has 6 sides is called
What is a hexagon
200
Angles that add up to 90 degrees

What is complementary?

200

A triangle whose sides are all different measures.

What is scalene?

200
A triangle with two sides the same length
What is isosceles
200
this is the number of degrees all angles of a quadrilateral will add up to
What is 360 degrees
200
A shape with 5 sides is called
What is a pentagon
300

a 90 degree angle

What is a right angle?

300

A triangle with an angle greater than 90 degrees.

What is obtuse triangle?

300
A triangle with one angle greater than 90 degrees
What is obtuse triangle
300
This is a quadrilateral with two pairs of opposite sides parallel and 4 right angles
What is rectangle
300
A right triangle has one angle that is 45 degrees. What is the measure of the 3rd angle
What is 45 degrees
400

Angles that add up to 180 degrees or form a straight line

What is a line supplementary angles?

400
this is the number of degrees in a straight angle
What is 180 degrees
400
A triangle with a 90 degree angle and no sides the same length
What is right, scalene
400
This is a quadrilateral with two pairs of opposite sides parallel and all sides the same length. (it does not have to have right angles)
What is a rhombus
400
A quadrilateral has 3 angles measuring 90 degrees, 100 degrees, and 70 degrees. What is the measure of the 4th angle?
What is 100 degrees
500

The angle formed by the two congruent sides of an isosceles triangle.

What is the vertex angle?

500
This is used to measure angles
What is a protractor
500
All angles in every triangle will add up to this number of degrees
What is 180 degrees
500
This is a quadrilateral with only one pair of opposite sides parallel
What is a trapezoid
500
A boat has a sail with one pair of perpendicular lines, and two sides the same length. What kind of triangle is it?
What is Right, isosceles
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