Practice with Triangles Terms of Use    Contact Person: Donna Roberts
Directions: Grab a paper and pencil to draw diagrams. Beware! The assistants may, or may not, be giving you correct answers!

1.
Find m∠C.

Choose:
 15º 25º 45º 65º

2.
In ΔABC, m∠A = 53º and m∠B = 32º. What type of triangle is ΔABC?

Choose:
 acute right obtuse acute and isosceles

3.
a) Find m∠1.
Choose:
 54º 65º 67º 71º

b)
Find m∠2.
Choose:
 92º 105º 109º 115º

c) Find m∠Q.
Choose:
 44º 65º 115º 136º

4.
The angles in a triangle are in the ratio of
1 : 3 : 5. Find the number of degrees in the largest angle.

Choose:
 20º 60º 80º 100º

5.
In the diagram at the right,
mB = 90º, mDAB = 72º, and mCAB = 55º.
Find mADC.
Choose:
 18º 28º 35º 55º

6.
Which of the following values could represent the lengths of the sides of a triangle?

Choose:
 1, 2, 3 6, 8, 15 5, 7, 9 8, 8, 16

7.
Find x.
Assume straight lines from E to A and from D to B.

Choose:
 15 25 35 45

8.
If the measures of the angles of a triangle are represented by 7a + 15, 3a - 15, and 2a, then the triangle is

Choose:

 acute. isosceles. right. equiangular.

9.
Jocelyn has a diagram of ΔABC where the m∠ABC = 90º, m∠ACB = 44º, and m∠CBE = 32º.
Find m∠AEB.

Choose:
 58º 76º 104º 114º

10.
Mr. Kaplan is showing you ΔACD where and
m∠DBE = m∠DBC.

If m∠EBA = 48º, find m∠DBC.

Choose:
 52º 42º 24º 66º

11.
Kayla has ΔACE with segments from E to B and from F to C as shown.
The m∠AEB = 28º, m∠ACF = 32º,
and m∠FDB = 131º.
Find m∠A.

Choose:
 120º 99º 81º 71º

12.
Cho has the diagram at the right.
m∠BAE = 28º, m∠ECB = 30º
and m∠ABC = 68º.
Find m∠AEC.

Choose:
 98º 126º 150º 166º

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