Definitions Name the Theorem Find the Angles Are they Congruent?/Reason Miscellaneous

100

What is an isosceles triangle?
A triangle with two congruent sides

100

What is the Triangle Sum Theorem?
The sum of the measures of the interior angles of a triangle is 180

100

What are 50, 40 and 45?
See diagram #1. The measure of angle 1 is ___ The measure of angle 2 is ___ The measure of angle 3 is ___
   

200

What are the legs and hypotenuse?
In a right triangle, the sides that form the right angle are the ___ and the side opposite the right angle is the ___.

200

What is the Exterior Angle Theorem?
The measure of an exterior angle of a triangle is equal to the sum of the measures of the two nonadjacent interior angles

200

What is 39?
See Diagram #2 The value of x is ___
   

300

What is a corollary?
A statement that can be proved easily using a theorem.

300

What is the Angle-Angle-Side Theorem?
If two angles and a nonincluded side of one triangle are congruent to two angles and the corresponding nonincluded side of a second triangle, then the two trianlges are congruent.

300

What is 12?
See Diagram #3 The value of x is ___
   

400

What are interior angles and exterior angles?
When the sides of a triangle are extended, the three original angles are the ___ and the angles adjacent to them are the ___.

400

What is the Base Angles Theorem?
If two sides of a triangle are congruent, then the angles opposite them are congruent

400

What are 54 and 63?
See diagram #4 The value of x is ___ The value of y is ___
   

500

What are corresponding angles and corresponding sides?
Two figures are congruent when there is a correspondence between their angles and sides such that ___ are congruent and ___ are congruent.

500

What is the Hypotenuse-Leg Theorem?
If the hypotenuse and a leg of a right triangle are congruent to the hypotenuse and a leg of a second triangle, the the two right triangles are congruent?

500

What are 30 and 120?
See Diagram #5 The value of x is ___ The value of y is ___
   

Congruent Triangles

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