Show:
Classifying Angles
Classifying Triangles by Angles
Classifying Triangles by Sides
Find the Missing Measurement
By Sides
100
What is an angles whose measure is exactly 90 degrees?
Right angle
100
What kind of triangle has three acute angles?
Acute
100
What kind of triangle has 3 different side lengths?
A scalene triangle
100
All triangles have a total of _________ degrees
180
100

A triangle with 3 equal sides.

 What is an equilateral triangle?

200
What is an angles whose measure is less than 90 degrees?
An acute angle
200
What type of triangle has 2 acute angles and 1 right angle?
Right triangle
200
What kind of triangle has three equal side lengths?
An equilateral triangle
200
One angle on a triangle is 43 degrees, the second angle is 79 degrees, how many degrees is the third angle?
58 degrees
200

A triangle with 2 equal sides.

: What is an isosceles triangle?

300
What is an angle whose measure is between 90 degrees and 180 degrees?
An obtuse angle
300
How many obtuse angles are in an obtuse triangle?
1
300
What kind of triangle has at least 2 equal side lengths?
An isosceles triangle
300

45 degrees, 100 degrees, and _______ degrees

35 degrees

300

A triangle with no equal sides.

What is a scalene triangle?

400
If an angle is 108 degrees is it _________.
obtuse
400
Classify the triangle based on the following angle measurements: 45, 35, and 100 degrees
Obtuse
400
Classify the triangle using the following side lengths: 8 inches, 3 inches, 8 inches
Isosceles
400
If a triangle has two angles that are 50 degrees, how many degrees is the third angle?
80 degrees
400

This triangle has 2 equal sides and 2 equal angles.

What is an isosceles triangle?

500
A straight angle is ________ degrees.
180
500
What kind of angle is found in all triangles?
Acute
500
Why are all equilateral triangles isosceles?
All equilateral triangles are isosceles because an equilateral triangle has 3 equal side lengths and an isosceles triangle must have at least 2 equal lengths.
500

Angle 1 = x degrees

Angle 2 = 4x degrees

Angle 3 = (2x + 5) degrees

What are the angles?

Angle 1 = 25 degrees

Angle 2 = 100 degrees

Angle 3 = 55 degrees

500

This type of triangle always has all angles equal.

What is an equilateral triangle?