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Triangles
Angles
Indirect Measurement
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100
I have one 90 degree angle.
A right triangle
100
I am any angle that is less than 90 degrees.
an acute angle
100
Draw a straight angle
<-------------------------o------------------------>
100
I am a triangle with 2 sides that are the same length
isosceles triangle
100
How many degrees do the angles in a triangle add up to?
180 degrees
200
I have 3 sides that are all the same length
equilateral triangle
200

two angles that form a line and are supplementary

adjacent angles

200
Draw a right angle
| | o-----
200
All of my angles are less than 90 degrees
acute triangle
200

the sum of the measures of interior angles of an octagon.

1080

300
I am a triangle with 1 angle greater than 90 degrees and 2 angles less than 90 degrees
an obtuse triangle
300

The sum of two angles is 90 degrees

complementary angles

300
Draw a 45 degree angle
(See student work)
300
I am a triangle with 3 sides that are all different lengths
scalene triangle
300

This question is about a triangle: If angle A is 40 degrees and angle B is 60 degrees, what is the measurement of angle C?

 80 degrees

400

A triangle with TWO sides that are the same LENGTH and ONE side that is a DIFFERENT LENGTH

 an Isosceles triangle

400

When parallel lines are cut by a transversal, we are in between the parallel lines on the same side of the transversal

consecutive interior angles

400
Draw a 160 degree angle
(See student work)
400

I am a triangle whose legs are congruent and whose hypotenuse is 

x sqrt 2

45-45-90

400
Two triangles that are exactly the same size and same shape are called...
congruent
500

I am what the exterior angles of a triangle are equal to.

remote interior angles

500
In an isosceles triangle, we are congruent

base angles

500

You can only use Trigonometric Functions (sin, cos, tan) with me.

right triangle

500

You can only use Trigonometric Functions (sin, cos, tan) with me.

right triangle

500

Brandon draws a triangle that has one 160 degree angle. What is the measurement of each of the other two angles in the triangle?

10 degrees