Lines & Triangles Practice
Find m∠1
123°
Find m∠1
30°
The ratio of the angle measures of the acute angles in a right triangle is 1:2. What are the measures of these angles?
30° and 60°
What is the measure of each angle in an equilateral triangle?
60°
The measure of one angle of a triangle is 40°. The measures of the other two angles are in a ratio of 3:4. What are the measures of these two angles?
60° and 80°
Find m∠1
90°
Which theorems or postulates could you use to find m∠1 in the previous question?
Triangle Angle-Sum Theorem and Triangle Exterior Angle Theorem
Which Theorems or postulates allow you to find the value of y?
Vertical Angles Theorem and Triangle Angle-Sum Theorem
Find the value of x.
x=37
Find the value of each variable.
x=80, y=80