Show:
Types of Angles
Degrees of Angles
Triangles Angles
Triangles Sides
Theorems
100
This type of angle is less than 90 degrees
What is acute?
100
45 degrees
What is acute?
100
Number of acute angles in an acute triangle
What is 3?
100
All sides of the triangle are equal.
What is equilateral?
100

What is a theorem?

A result that has been proved to be true (using operations and facts that were already known).

200
This type of angle is exactly 90 degrees
What is right?
200
91 degrees
What is an obtuse angle?
200
Number of right angles in a right triangle
What is 1?
200
2 of the sides are congruent.
What is isosceles?
200

Describe the Triangle Angle Sum Theorem.

What is that the sum of all three angles in a triangle is 180 degrees.

300
This type of angle is greater than 90 degrees
What is obtuse?
300
a right angle
What is 90 degrees?
300
The number of obtuse angles in an obtuse triangle.
What is 1?
300
None of the sides are congruent.
What is scalene?
300

If one angle is 78 degrees and the second angle in a triangle is 35 degrees, what is the measure of the third angle?

What is 67 degrees?

400
This type of angle is 180 degrees
What is straight?
400
180 degrees?
What is a straight angle?
400
The number of acute angles in a right triangle.
What is 2?
400
Equilateral, Scalene and Isosceles Triangles are measured by this.
What are sides.
400

Describe the Triangle Exterior angle theorem?

An exterior angle of a triangle is equal to the sum of the two remote interior angles.

500
The four types of angles in order from largest degree to smallest.
What are straight, obtuse, right, acute?
500
0 degrees
What is an acute angle?
500
Number of straight angles in an obtuse triangle.
What is 0?
500
Exactly the same size and shape.
What is congruent?
500

In triangle ABC, angle A is 5x +17, angle B is 2x +25 and angle C is 6x +21. Find x and the measure of angle A.

x = 9 and Angle A is 62 degrees