Classifying by Sides
Triangle Art
Classifying by Angles
Miscellaneous
Sum of Triangles
100
I have 3 equal sides.
What is an equilateral triangle?
100
Draw an acute triangle.
What is "Show your art."
100
A triangle with all angles < 90 degrees.
What is an acute triangle?
100
This is the measurement of every angle in an equilateral triangle.
What is 60 degrees?
100

Angle 1 = 21 degress

Angle 2 = 32 degrees

Angle 3 = x degrees

What is 127 degrees?

200
A triangle with at least 2 equal sides.
What is an isosceles triangle?
200
Draw an obtuse triangle.
What is "Show teacher."
200
A triangle with one angle > 90 degrees.
What is an obtuse triangle?
200

Josh drew an acute isosceles triangle. He had an angle that measured 90 degrees and 2 sides that were equal. What was wrong with his drawing?

You can't have a right angle in an acute triangle

200

Angle 1 = 45 degrees

Angle 2 = 45 degrees

Angle 3 = x degrees

What is 90 degrees?

300
A triangle with no equal sides.
What is a scalene triangle?
300
Draw an equiangular triangle.
What is "Show teacher triangle with all angles equal."
300
A triangle with one angle measuring exactly 90 degrees.
What is a right triangle?
300

This triangle has 2 sides the same length and one right angle. Classify by both angles and sides.

What is a right isosceles triangle?

300

Angle 1 = 72 degrees

Angle 2 = 36 degrees

Angle 3 = x degrees

What is 72 degrees?

400

True or False:

All isosceles triangles are also equilateral triangles.

False

400
Draw a triangle with perpendicular lines.
What is a right triangle drawing?
400

A triangle with the following angle measurements: 97 degrees, 40 degrees, and 43 degrees.

What is an obtuse triangle?

400

A triangle is an acute obtuse triangle. Is this possible? Why or why not?

not possible, because an obtuse triangle has one angle >90 degrees and an acute triangle has all 3 angles < 90 degrees.

400

Angle 1 = 35 degrees

Angle 2 = 27 degrees

Angle 3 = x degrees

What is 118 degrees?

500

The sides of an isosceles triangle could measure the following: 

A) 6", 7", 8" 

B) 9", 9", 9" 

C) 6", 9", 11" 

D) 6", 6.5", 7"

What is B, 9", 9", 9"?

500
Draw a triangle that is obtuse and scalene.
What is a triangle with an obtuse angle and no equal sides.
500

This triangle has all angles measuring less than 90 degrees.

What is an acute triangle?

500

An equilateral triangle can be an isosceles triangle. True or false, and why?

true, because an equilateral triangle has 3 equal sides. An isosceles triangle has AT LEAST 2 equal sides, which means it could also have 3 equal sides.

500

Angle 1 = 55 degrees

Angle 2 = x + 25 degrees

Angle 3 = x degrees

x = 50 degrees

M
e
n
u